Is using a paid program unofficially, a practice that is widespread and known to the program developers, considered forbidden (haram) and theft?

It is not permissible to resort to stratagems to use programs whose producers prohibit their use without a financial subscription. This is because the rights of innovation and production are owned by their creators, and violating these rights is a forbidden aggression, akin to theft. The widespread nature and commonality of such deceptive methods do not make them permissible in Islamic law.