You find people willing to pay for your work, not for a license. If your ongoing work is not worth anything, why should you be paid extra for work you did in the past?
>If your ongoing work is not worth anything, why should you be paid extra for work you did in the past?
If you write a piece of software that took you a year to write but buyers are only willing to pay $500 for then do (A) live on $500 or (b) try to sell to many buyers including some in the future?
You seem to be saying (b) is out of the question but if it is who will write the software these people wish to buy?
You can find multiple buyers before you write the software, you know - you don't have to have just one person paying you. If it's consumer software, things like Kickstarter or Patreon are how this is often done - if it's b2b, this is how a lot of software development is done anyway. Examples of software successfully funded via crowdfunding include Spine, Magit, and Diaspora - although Spine appears to be closed-source anyway. You can write an MVP, pitch it to potential clients, and write software that provides value to them. That's what I'm doing.