Indeed, this might be the case.
Now that I think about it, I own FLStudio as a simple beat making tool, exaclty because of their "free lifetime upgrades" policy.
But then, there are so many other options here - like having more paid versions. I mean, it's probably possible to calculate - e.g wait a year from now to get the modularity for free, or pay extra $ (not big, I would hope) and get the functionality in 3 or 5 months.
Look at how Unity does this - they have a very capable free version, and are moving modules from the paid to the free version (like mobile deployment), but there is, if I recall correctly 100+ team behind the development.
Or, let me rephrase the question: is it possible to turn C2 into a more mainstream tool just by getting more "serious" users/teams of users to make games with it, or maybe this requires changes on both ends of the stick? ;-)