As one of the two asking the question, that was absolutely the point of the discussion. Optional. A monthly reminder to pay an invoice for whatever amount the payer desires. End at any time, or change the amount.

The point is a bridge to provide support to the client developers to continue to focus on their work without another fiat job.

We will eventually figure out how the efforts to support the ecosystem can cover costs and make a living for their value. Clients, relays, storage services (imagines, video) etc. We need to get there.