[CharlesW]

Of course it's okay for languages to evolve, but here's how you're missing the point:

Imagine that shortly after the turn of the century, Adobe created a proprietary platform for delivering internet content and called it the "web". Viewers must use Adobe Web Reader to use Adobe "web pages", which are DRM-protected PDF files delivered using proprietary protocols. Adobe has done deals with several hundred popular sites to turn off their standards-based websites and deliver Adobe websites exclusively.

This is what Spotify and others are doing, and nobody cares. Apple is effectively the last media giant left holding the flag for standards-based podcasting, but how long do we think that will last?