I've got several fairly expensive apps (PowerPC apps) that I use in my work, and they serve me well. I have no need for them to be updated. They don't offer any new features that I need or want. Assuming Lion will be priced at $129, that's a drop in the bucket compared to what my total cost would be.
So, Apple, tell me again why I would want to "upgrade" to Lion?
Guess you shouldn't then.
But Apple won't and shouldn't base it's roadmap on extreme fringe use cases.