I think this more comes to figuring out who the right early adopters are. You need to have something sufficiently better than what's out there to overcome inert

I think this more comes to figuring out who the right early adopters are. You need to have something sufficiently better than what's out there to overcome inertia and get people to try your product. If you target (in the project management case) people who use every feature of that project management software, then you need all those features plus yours, or your new feature has to be so good that they're willing to throw away all those. If you target the person who does not yet use/need project management software you have a lot less to overcome.