Whenever I read something about Bill Watterson, I end up thinking about how, during the '80s and early '90s, Watterson, Tom Batiuk, and Harvey Pekar were all producing some of their best work.
Three Northeast Ohio creators, working in different areas of the comics world, yet it's easy to imagine a shared universe where Calvin and Hobbes, Funky Winkerbean, and American Splendor all occupy the same map and interact.
They also had in common that the work itself was the product. The strips and stories came first; merchandising, branding, and other empires were either absent or beside the point.
That's probably a coincidence. Or it says something about what 1970s acid rain did to the water in Lake Erie. But Northeast Ohio did seem to have produced an unusual number of artists who were more interested in the work than in building a franchise.