I don't think bitcoin is only for rich people. Bitcoin is for all . He who wants to earn bitcoin he can.There are lots of way to make profit in bitcoin as we know. You can trade ,ICO,gambling,mining you don't need to have enough money for it but you have to be smart ,patience as you said. So that you don't be reach to make profit you need to have good strategy.

I belong to that school of thought as well. Bitcoin is over 6000$ and for me to make something good investing in Bitcoin definitely good capital in place else investment of 100-400$ is just mere waste of time.

Bitcoin is for all investor's even you are rich or poor people but we see the difference only rich people can afford more invest and get more profit. But the main investment this is your effort and courage and also your good skills in playing the market. If all of that is within you both human and non human capital you will be successful for this.

I think your assumption is very wrong. we can hold bitcoin with or altcoin to make a profit. Bitcoin can be owned by anyone and not just for the rich as you say. I pioneered from a small trade to get every bit of coin and I collected it little by little

that's not true, we know very well the history of bitcoin was created for options.
technology can be used by all people, including ordinary people, and bitcoin or crypto are part of technology in this era

Using money is for both the rich and the poor. Both have access to money but the rich have more of the money (cryptocurrey-Bitcoin) than the poor. Bitcoin, is money, it is simply another means of exchange but this time using cryptography/blockchain and exists only in electronic gadgets-computers, smartphones, etc. Bitcoin is beneficial to both the rich and the poor. If the rich trades/invests with it with poor or inadequate knowledge,  he/she can loose money, likewise, if the poor trades with it expertly, he/she can be rich. Bitcoin if for those who are willing to know how  it works and begins to utilize it for various transaction, be it for the rich or the poor.

Bitcoin was originally conceptualised during the world economic crash as a means for transfer of value between people of all classes, without the need for a central government. However as we all know now, "whales"  or large investors control a lot of the bitcoin supply, so an argument could be made it has not worked

No, a person's level of wealth is not a certainty to get a profit, those who can benefit from bitcoin are those who have an understanding of bitcoin so they can use the opportunity to make a profit.

Of course it's not just how much money you have to invest. You can start with a small amount of money, but if you have the desire to develop in this area, then you will get rich.

No, everyone can profits from bitcoin, not just only the rich.. While there are whales who manipulate the market, cryptocurrency still remains a system that can empower even the poor. This is something every one who takes their time to study and understand the system can make profit from.