For a lot of developers, a one time payment is not enough to sustainably work on software that is constantly improving over the years. Having one of the following solutions will help:
- A per product subscription: You get free updates and support as long as you pay yearly
- A per developer subscription: same than previous, but for all the products of a developer
- A paid update: give a developer the possibility to mark a specific update (and the following ones) as being a paid one
Thanks for your time