How many more "Bitcoins" can the market absorb?
It's already taken care of most.
If something has merit then it'll be fine. If it's crap and pointless then off to Valhalla it goes with a whimper.
Does Linux with its hundreds of distros have any merit? Then why does it have a market share of only 2% ?
So there will never be mass circulation of cryptocurrencies. Because instead of joining forces to compete with fiat they are competing with each other.