Some of us were present at HeroCon and stood and cheered for the lawyer that took on Marvel. The Legacy community was also very effective at self-policing and reporting IP-infringing characters running around to do their part in staving off another lawsuit.
Companies are very protective about their IP and now it's not just Marvel but Disney. Not saying that they'd come after Homecoming, but Disney had threatened to sue several daycare centers. Heck, Apple attempted to sue a grocer in Poland because of their web address (a.pl). Don't assume what corporations may or may not do, because some of them are real Richards.