Well if we are talking about the point of open source, then really, the lack of restrictions is the point. Some commercial entities wish to redefine the term because it benefits their marketing, but is that the line we want to draw in the sand?
People have different ideas about what open source means. Defining that is what licenses are for. "Unrestricted in all cases" is simply not how that ever played out, historically, at least not for as long as I can recall.
