They've started to roll it out here in South Africa too, UberOne is advertising everywhere, what also makes this model successful is the physical constraints of the service, the subscription can pay for itself if you use Uber for example during peak hours and avoid those surge charges
I think a model like this could work for additional services like CoinJoins, atomic swaps, or submarine swaps that wallets provide, so you put them in a priority queue with subs first and highest bidding non-subs after