Beyond just Vechain, Cardano is working with Ethiopia to give five million students a blockchain-based ID that will allow the government to track their academic performance. There are more examples like these, though admittedly many of them have been announced in the past year or so. Ethereum, which is a bit older than these projects, is on path to clear $1-2 Trillion this year.
I know the argument that this is early days isn't very compelling, but I think it makes more sense to look at generation 3 cryptos as the start of crypto's focus being fully blockchain projects instead of currency replacements.
For the record I don't believe it should be banned broadly speaking. Banning legal exchanges for proof of work cryptocurrencies is something I might be convinced is a good idea since PoW is a disaster, but I would not support banning non-PoW consensus cryptocurrencies.
Get rid of PoW and a lot of the bad shit about cryptocurrency is gone. Yes you can still buy droogs with it, but most droogs are bought with cash anyway. Cryptocurrency is a small fraction of the droog market.
A product? A service? A game? A hosting solution?
The only one I can think of is Sia and maybe FileCoin if they actually ship something useful, and those have only a tiny number of actual users.
I guess maybe Steemit if someone actually still uses that.
We are now in year 13 of the cryptocurrency revolution and I'm having trouble thinking of anything you can do with this stuff.