>>On the legal side, EULA is a contract submitted by each party's national, and international law. A lawyer would probably argue that, whenever the editor no longer services the product, users de facto have the right to tamper it.
>>On the practical side, no one at microsoft has ever cared, and cares about VFP being decompiled; it's no longer strategic, if it ever was.
>I've contacted Microsoft's legal department to get their official position on VFPA's legality for use in VFP9 Professional by U.S. entities (citizens, corporations).

I received a reply from Microsoft today.

The email said they're searching for someone inside Microsoft with expertise on the matter to address my inquiry.