Originally Posted by
yyznomad
This was legacy Starwood.
Personally, I'd guess it has more to do with the local hotel management/ownership than with the hotel company, be it Starwood or Marriott.
With that said, if a given hotel only had a few connecting rooms and/or is in a market where there is a high demand for them, I might be able to see a specific hotel charging extra for connecting rooms. But under most situations, I doubt it would net a hotel very much in the way of extra revenue.