It'll become increasingly differentiated and people will realise more than ever that what it's aiming for is truly valuable. It'll never leave the top tier.
At the same time there are plenty of projects that don't really care about proper decentralisation or particularly need it or have the need to be valuable. There's no shortage of people willing to throw money at that too.
It's time people started to get less uptight about market shares. Bitcoin spawned this market. Many of the subsequent projects might have been inspired by it but don't have anything like the same aims or purposes.
I think it's conceivable that in five years there won't be anything other than BTC, LTC and XMR left standing out of the current top coins. The rest are largely platforms with no real ethos and they can be easily superseded by new ones that do it better, cheaper, simpler and more securely.
There's a huge amount of value in Bitcoin's purpose. There's a huge amount of value in something like ETH's purpose, but I'm not convinced ETH will be the one to fulfil that initial promise.
The only thing Bitcoin is in competition with something like Ripple for is the funds pumpers have on exchanges. If that's anyone's number one concern then that's showing them up as a silly sausage.
There'll be lots of noise, but the cream will always bob to the top.