I had to rent a reel to reel tape player to recover an audio tape from a wedding. That is where Vegas came in handy too — I could boost the volume in the sections where they were saying their vows and reduce it in the louder sections. Turned out very nicely.
It is nice too for removing pops and skips on old LPs or 60Hz hum.
There is probably a business rendering video for web sites. Especially, for Internet web sites where their primary product is web based video.
There was always the copyright issue too — I created many pretty good slide shows and videos but couldn't sell them.
Sony offers royalty free music, though.
Most people expect high quality production from SLP VHS and other weak formats for pennies.
I use a Rode microphone myself. Audio generally gets cut for stock submissions unless it is really relevant.. Typically, I render the audio for stock audio in Audacity.
I have a Betacam SP in the closet that I bought on Ebay cheap. Mostly because I used to work with them in TV production land.