I had the misfortune of using Visual FoxPro once upon a time. It was horrifyingly bad, but perhaps by that time (2002-2004) it was suffering serious impedance mismatch with the rest of technology which had moved on. Anyway, I wouldn't call it a good example :)

Regardless, that was kind of my point - all these systems are only good as long as you stay within their constraints. The unfortunate thing is that the constraints always end up being way too tight in practice.