That being said, I don't think all that money would flow in to btc exclusively. I think that what would happen is that other, better coins would have their caps raised as well. For example a rise in ltc makes sense as the transaction time is much lower, or maybe one of the anon coins would get boosted.
Either way we are in exciting times.
This is a thing I love to talk about.
My thought is that REPUTATION is the biggest point in favour of a cryptocurrency at the moment.
This because cryptocurrencies are NOT trusted by the mainstream, and thus the one that will boom is the one that will have most users, because more users mean more reliability.
This is why Bitcoin is becoming more and more solid along time.
But of course there are other considerations to do.
Bitcoin is NOT the best technology around. And this could be its damnation in the future.
BUT, it's also true that Bitcoin technology CAN be updated.
So, let's say that Bitcoin WILL be kept up to date technologically, WHAT would a person push to invest in, say, Litecoin, instead than in Bitcoin?
Think about it: Bitcoin is the most implemented crypto around the world.
Sure, you can't use it so often or easily yet, but that's growing, while other crypto are at the bar. Frozen in there. Just used as a mean of exchange between themselves.
So get into a common person, that will want to buy a crypto in 2 years, why would they orient to Litecoin, instead than Bitcoin, that has been adopted by far more people, implemented in far more shops, and has (and will probably have) a far more solid value?
Be clear that I LIKE very much Litecoin, because it's capped higher, and I consider the 21 million Bitcoin cap too low.
But as Bitcoin CAN be made more granular, also this problem could disappear probably very quickly in the future, if needed.
Anyway, this is the real slot machine of the future: will altcoins survive? How many of them?
I think maybe 3 or 4 will survive, for a period and, unless Bitcoin is destroyed for some reason we can't imagine yet, other crypto will disappear in the end.