[myself248]

There seems to be a never-ending stream of these services, each very similar to the last, but none seem to survive more than a few months, a few years at the outside.

I think GP's point is that this churn indicates that it's not a "solved problem". It's clearly solvable, but whoever runs these services doesn't find a revenue stream. It should probably be provided by your ISP just like email and usenet once were, but the cultural expectation isn't there. Maybe they get shut down because people use them for bad things? I don't know.

[qbasic_forever]

This has been around for years. There's 'churn' because there's almost nothing to hosting this service. None of the data is sent or goes through a cloud service, it's all P2P connections. There only needs to exist a central server for brokering initial connections and handshake between clients. Anyone can setup and run a service like this with just a few dollar domain name and a couple bucks a month of VPS hosting.

I think you're really just wanting some big name or trustworthy player like Dropbox to come out with a similar service. It's not going to happen--like I said by design wormhole and similar tech doesn't send or store data on any central service. There's no value for some big company to give people this service, they're literaly just burning bandwidth to shuttle invisible (to them) bits and data. They can't extract anything like advertising targeting, revenue, etc. from the service. It will always exist as some weird self-hosted thing.