lol
Do you expect a program you paid $10 for to be supported forever? Not even Operating Systems are developed/supported indefinitely.
A payment for any software is no guarantee of support forever. For some, you may get it as long as the company is operational, for others, until they release a major new version and dump the old version. And for others yet, until their life changes dramatically and they move on. Their is no contract, no ethical quandaries, etc.
Move on. End of story. This topic is done.