This seems disingenuous. While it certainly sucks that something which was once completely free to you now costs money or comes with several strings attached, i

This seems disingenuous. While it certainly sucks that something which was once completely free to you now costs money or comes with several strings attached, it's hardly unfair or dishonest. What you had for free continues to be free, forever. That's the nature of open source. You could fork that code base and continue to improve it, or start your own project around it. Sencha decided they couldn't build a sustainable business by continuing to not charge people for their hard work, a reasonable and dare I say responsible decision. People who are making money off their work now have the choice to financially support that work, rather than simply seeing it die completely, which is what would have otherwise happened.