You're describing another major benefit of eliminating software patents.
Even large companies don't actually benefit from that because their suppliers and companies in complementary markets do the same thing, and you lose any time any of those companies can maintain a moat with which to extract rents out of your own market.
These are deadweight economic losses. They hurt everybody to benefit the company doing them, but even that company is suffering a net loss because of all the companies doing it back to them. Yet they still do it because it's a tragedy of the commons, unless you remove the mechanism that enables it, i.e. software patents.
Even large companies don't actually benefit from that because their suppliers and companies in complementary markets do the same thing, and you lose any time any of those companies can maintain a moat with which to extract rents out of your own market.
These are deadweight economic losses. They hurt everybody to benefit the company doing them, but even that company is suffering a net loss because of all the companies doing it back to them. Yet they still do it because it's a tragedy of the commons, unless you remove the mechanism that enables it, i.e. software patents.