Do not be too happy that big and giant companies are entering the field…
Because they set the price up and down whenever they want…
You should be happy when ordinary people invest more than big companies.
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.
In simpler terms, it is much better if bitcoin or anything else that exists is distributed all over the world and reaches individuals and companies equally, or, as the saying goes, does not accumulate together.
Wherever governments or large corporations stand, they are sure to determine everything.
Successful and healthy

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.