It is spreading because it is the most profitable and proves that the best use case for bitcoin is as digital capital, not to pay for coffees.

Gradually more and more companies are using the same strategy, but they don't usually make the headlines, unlike what happened when Microsoft refused to buy bitcoin for its reserves. The most potential beneficiaries of such a strategy are not those that are already hugely profitable in themselves. The best thing for StrategyBTC is that by being a pioneer it is the one that benefits the most from others doing the same.

They see that Bitcoin is the right asset to be used as an investment now. Especially there are already several companies that have been successful in investing in Bitcoin, for example MicroStrategy, etc., they might take an example from that and start taking the same approach to investing their funds in Bitcoin to be able to get profit from it.
Moreover from the news I read, Howard Lutnick, the billionaire who was the CEO of Cantor, was one of the people who supported Trump to become president and now he serves as the United States Secretary of Commerce, he believes in Trump's policies that will support the growth of cryptocurrency in America, and that makes him sure to form this crypto venture that could potentially give him profit when the price of Bitcoin goes up.

It is good news if they can see the chance to make more money from Bitcoin. Their decision to invest in Bitcoin are right although the time is not too good to start the Bitcoin investment. We hope they will not panic if the price get correction and could buy more Bitcoin when the correction coming in the next. We are happy that more companies realize the opportunity and use the similar strategy that MicroStrategy used. That will give them time to accumulating Bitcoin time to time. Well, we should continue our Bitcoin investment while we still have time.

It's not bad, but don't forget that every companies investing in Bitcoin are not just doing it so that the price can keep going up, they are throwing in that massive amount of money to make more money too.

What has been happening with Bitcoin since the beginning aka price action will keep taking place, don't forget this, so take your profit as the price action keeps souring higher, it will get to a point where they will have to take profits too.

They might decide to hold just like other big companies too but they know better than average retailers like us, big companies with big money also have expert watching the charts for them, don't let anyone deceive you.

This is big deal and shows that big companies are starting to believe Bitcoin like MicroStrategy. Fact is that big financial company like Cantor Fitzgerald is supporting $3 billion plan to invest in Bitcoin along with other important companies like Tether Bitfinex and even SoftBank really shows that more big businesses are accepting Bitcoin.
This is showing that more Big Companies Wanting Bitcoin $3 billion investment is huge and will probably make more people want to buy Bitcoin which could make its price go up over time. You are right it is showing that  more companies are copying MicroStrategy.
This is also showing that Bitcoin becoming more normal means big well known financial companies like Cantor Fitzgerald get involved in Bitcoin it means Bitcoin is becoming more accepted in the regular financial world.
It is definitely important to look on. If this 21 Capital plan work well it can make Bitcoin even more accepted by big investors.

We may also just go back to where we were just from the market becoming less confident - it's all in a smoke currently, even if we see a positive reaction on BTC chart, and I do hope it will stay that way.

I mean once the market (and other similar big companies) showed that it can be a pretty solid investment it was only a matter of time before others follow suit. Temporarily it sounds like a good thing but them having this much and some capability to collapse the market, even if temporarily, really looks terrifying.

I mean they're goal is sn eventual sell after all so there's definitely going to be some people ( or companies) who would incur losses. To each their own by then I guess

I will not use Tesla as an exam or advise anyone to take their approach. MicroStrategy is doing a nice job, and they have been holding for long without selling, but for Tesla and its CEO Elon, they have an unstable stance in terms of Bitcoin; he can wake up any day and decide to go back to his excuse of Bitcoin being harmful to the environment as an excuse again to empty their 11,509 bitcoins which they hold.

The link the OP provided is for only paid membership to access the full content, but you can get the full details from the source below.

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This is one of my fears in terms of institutional investors and country governments coming into the acquisition of bitcoin; it will all boil down to a level where they have their hands in the larger portion of Bitcoin since they can't control the network that can give them access to at least manipulate the market to some extent, which is the disadvantage and negative impact that many are not picturing from this perspective; rather, they are more focused on price increases.

It's a good and healthy development for sure going into the future: and I do think it will fall with the rest of them coming in recent times.

News are just that - they just change the minds of the people on the subject.