Wouldn't a licence like Qt do that, price for static linking. As an open-source developer where I am not thinking to earn a single penny from apps I build why

Wouldn't a licence like Qt do that, price for static linking. As an open-source developer where I am not thinking to earn a single penny from apps I build why would I support the Kickstarter campaign and as a Company who want to make big why I would I support the campaign to open source it where I could just buy the source code if I want to and get an edge over others.