>Seems to me that there is simply common-sense eligibility to USE a product any way I choose, some of which may be amenable to the vendor/licensor and some of which may not be. If I choose to use VFP7 as a frisbee, that's seems to be my business, not MS' unless I then ask for a replacement CD.

Even if "you" were restricted somehow (as first purchaser), how could a purchaser of you app be restricted ?

The implication is that now you are somehow an (unpaid) "agent" of MS ... ("but don't use our logo").

Even if you buy into this, how can you control or be responsible for what an "end user" (of your app) does with it ?

I don't see anywhere where I have to "force" a purchaser/licensee of my app to buy into what platform my app "runs" on (even if I imagined I could only "develop" on Windows).

For that matter, I don't see anything that stops me from "developing" on Linux (vs making "distributables" available on Linux) ... in which case, distribute apps that only run in the development environment and have the end user buy a copy of VFP.