Given the fact that there are only 21M bitcoins, one could wonder if bitcoin was designed for a few selected or first few adopters and not to be a global currency in a world with +7 billions people.
What happens 40 years from now when most of the people on earth turn to using crypto currency? simply use alt coins when they see bitcoin already in hands of a few hundreds people and not wanting to be manipulated by them or even by 1m coins of satoshi?
Can't we have a second version of same code with same team and the same credibility developing it?
If there are billions of Bitcoins in circulation, 1 BTC wouldn't be as much as it is right now. The number of Bitcoins being much lower than the total population is actually a good thing. Once the majority of people adapts Bitcoin, then Bitcoin would be scarce and us, the people who have been here first, would have much more money.
Of course we can use altcoins, but altcoins are usually being used for trading and after all, all altcoins are still based on Bitcoin.