I used to be a big fan of prtmissive licenses until I bought a $700+ android phone a couple of years back and discovered that it did not "support" my native language (it could render the glyphs but system-wide support was not enabled).

Having extensive experience with unicode and how text is usually rendered, I knew exactly how to fix the issue; the fix was likely as simple as injecting an SO that hijacks a specific system library function. However, because the phone was locked down, I was unable to fix the problem myself. All important system apps including SMS and the browser displayed gibberish.

It was the most expensive brick I ever bought.

This experience taught me the true value of the GPL and why user freedom far outweighs the freedom of developers.