I think all Investment have a risk, eventhough bitcoin is risky but a lot of people still interested to Invest their money in bitcoin including rich people because everybody know bitcoin as a promising Investment and bitcoin price can increase rapidly.

Still i dint understand purpose of your question . But based on my understanding if more people start to consume bitcoin with limited supply 21 million . then obiviously bitcoin demand and price will increase . I may reach moon even mars then Sun also.

I agree, rather than having to limit users bitcoin should find a way to further improve stability for a time, if the bitcoin users are increasing, it will not be a hassle.
preparing empty seats for new passengers 

I never thought of the limited number of bitcoin users because bitcoin is a financial solution that everyone has the right to use bitcoin to solve financial problems. many bitcoin users are not the cause of the decline in bitcoin prices, and conversely more and more people are adopting bitcoin will certainly make the demand increase and will make the price higher. so in my opinion you have no right to suggest about limiting the number of bitcoin users.

WTF? Are you talking about the global human population growth or the growth in terms of Bitcoin users? If you were referring to the latter, then why should anyone stop it? It is going to be good for Bitcoin and its users. The more the number of users, that much valuable will be the currency. Everyone will benefit out of it.

Why do we need to prevent new people from entering the market? It is true that Bitcoin cannot handle huge volume of transactions in a day because it can only confirm limited transactions but preventing new people to buy or invest in Bitcoin will not solve the problem. Bitcoin is still not a perfect system and still needs a lot of improvement and needs to have a solution to its scaling issues. Instead of limiting people from using it (which is impossible to do since everyone can freely use Bitcoin) why not just focus on how to improve the network? lightning network will come out and lets see if it can solve this issue if it fails then schnorr signature will be the next option.

I think that if Bitcoin is overloaded, then there will be measures of the system sent to users such as not being able to buy small quantities and not be able to invest in Bitcoin in short to avoid losses at system overloads. The system.

i highly agree with you, and to think that preventing the usage of bitcoin would be beneficial, i guess not, besides in order also to improve bitcoin, it really needs users, and it doesn't mean we will have to limit those who wants to use it, its not wise and its not a problem solver. and just to consider that it can freely be used by new users according to what you have said mate, so the best move should be improving the networks in order also to avoid traffic per transaction everyday.

We need adaption and good implementation and limiting users is not helping bitcoins and any another cryptos to develop more.
Secondly, Bitcoin is a digital currency and it does not get overpopulated, it grows when many invests.
And if you are pertaining to the Forum itself being overpopulated then you should know that since last year, moderators and admins already implemented good ways not to limit but just to prevent over-polluting this forum.
1. Creating new accounts may have evil points.
2. Newbies are no longer allowed to join signature campaigns (sometimes Jr.s too). Newbies can not wear signatures.
3. The Copper membership allowing newbies to have less restrictions for their own business activities.
4. Merit system to freeze some accounts and lessen spam and shit posts.

This are just some of the ways I have noticed and there is nothing to worry about.
The new system is still going to give results of its effectiveness.

I am impressed that you are pretty confident with your statement, you join the campaign but you are being pessimistic of Bitcoin’s growth, with the Bitcoin’s increasing popularity means it will increase its price, do you not HODL Bitcoin? lol
And also for rich people, they already have a lot of money because they are well established in economy. If they don’t succeed in Bitcoin, they will still be rich people. They understand already what is investment and its risks.