However, I would prefer to be able to use the features in development (before production) without paying. The features don't really bring any value until they're in front of users, so asking for payment before this value is realised is a hard sell.
For personal projects I'm just never going to commit to a monthly payment before I put something in front of potentially paying users. For company projects justifying expenses during the experimentation phase is a hard enough problem that I'd just not bother.
Note: I'm not including support in any of this, I realise that support costs money regardless of when it happens.
I understand that the private fork makes licencing hard for this way of charging, but it would be great to see nonetheless.