Orwell wrote:
They created it, they wrote it. They have certain rights over that which they produce. They have no rights over what their competitors wrote. If you want to go against Adobe, the appropriate way to do that is to boycott until they drop prices to a level you find reasonable, not to simply take whatever you want.
But, again, if this person isn't gonna be buying the software anyway, Adobe loses no potential sale, and therefore no money, so I fail to see your objection.