Sure, abandonware will proliferate on Nostr.

But there should be a lot of plug and play type infrastructure coming eventually where it will just be easy to build on and piggyback from the identity system.

I don’t know what will be built that will work to gain a following, but interoperability lowers the bar for new entrants so the likelihood of something sticking goes up. More apps is more at bats. There’s no guarantees obviously but for devs there’s no better options for bootstrapping out there today.