I did thought that everyone would appreciate if these big firms entered crypto just as they have done now? I used to read topics in these boards in the past and one of people's wish was to see Bitcoin get massively adopted by individuals, banks, big firms and government coz that would help the price grow. The price has grown now due to their involvement but they can chose to sell or manipulate the market and they own majority share of Bitcoin coins.
And having such a leaf share of the market by whales and large companies can move the market in any situation and, contrary to popular belief, sometimes move quite the opposite.
On the contrary, who are stopping these big companies from entering the field? This is open market and we can't really control who or what entity are going to buy. Besides, ordinary people can invest or used bitcoin as form of money.
Again, I find your argument flaw in the beginning. From Africa to Asia, anyone can invest, so it is still distributed all over. It's not just US big companies are entering, there are also wealthy people from Mexico to Asia, so there's nothing wrong with the current market situations. And it's good the bitcoin has evolved has well.
The evolution of bitcoin has not yet happened. When we can see that all the people of the world are familiar with bitcoin, as now all people know what the dollar is.
You also know that many countries from Asia to the United States are opposed to Bitcoin, and if I were to write a list of these countries for you, the list would definitely be long.
Hopefully, as you said, one day bitcoin will evolve.