You have a very good argument here. Yes there are already alts out there that are better than BTc when .it comes to the purpose and the whole decentralization thing.But bitcoin was the first and as you said people wanna make quick money after seing how much it grown this past months. So one of the main attraction about bitcoin right now is not his purpose but his price . Besides how do you expect to control those big holders ? they are investor also and opportunists ,That way you are suggestion that the network should make a limit on how much bitcoin you can hold ? Where's the freedom in that? isn't BTC all about having your freedom over your assets.
I am in no way suggesting anything. This project turned into a first dibs kinda thing. I just dont think Satoshi really had a clue what was going to happen. Kinda like when you have great intentions with something and it just goes out of control. To me thats a problem though, there has been people to be verified to have 100s of thousands of coins just there laying around. New people are also getting carried away by the news and buying 1 btc with their life savings because they think it will make them a millionaire and that BtC will be the only currency of the future. How can anyone really predict that? If BtC goes to millions then I will be a millionaire so cool I guess but then there will be quadrillionaires out there which I mean is that even sustainable? That would be like for every ultra rich there will be millions of ultra poor. This in my opinion would be the most catastrophic thing to ever happen in the history of mankind. Just saying. So those quadrillioares will call the shots for good or evil. Isnt that scary though? But I bet people havent even had that thought through their minds right now. Lol.
Remember that the value of fiat is mandated by a central bank. If you have $6000 in the bank, and you want to take it out, the law says the bank has to give you $6000 in cash, no messing about (there are of course many "except when..." scenarios, but you get the idea.)
If Bitcoin is sitting at $1m (we wish!) and everyone decides to cash out, only the first bunch of sellers are going to get that full $1m price. The more people sell, the more the price will drop. So what you said above about most of people will become thrillionaires is impossible unless all instituations started to accept bitcoin as a payment method which i hardly doubt will happen.