Patent trolling is a red herring - just a form of economic specialization. Selling your patents to a troll or hiring an attorney to enforce them for you are just different labels for the same transaction.

It's just that, in software anyway, many more things are patentable than ought to be. And arguably the whole concept behind patent law has proved unnecessary necessary in our field - "good" actors deduplicate efforts and share mutually beneficial IP via the open source community.

Someone in software using the patent system at all is probably acting in bad faith, or else building a moat to defend themselves from bad-faith actors.