I agree that it doesn't help with retaining users, but using HIVE is already a good step.

And for the RCs, well, delegated RCs are still delegated by someone who holds HIVE. They can't come from thin air.

Businesses/Dapps using HIVE should think only of their business and use HIVE as an extra tool. If you try to force the use of HIVE, then you are losing customers, and the blockchain won't be successful if it isn't inherently useful.

So let dapps do whatever they do, and hopefully there will be enough value for new users to join.