I think so, George. I guess you mean that people can "entertain" in most pubs by strumming away at Wild Rover and Whiskey in the Jar non-stop, and you're right that they're probably doing no service to the music that way. We can probably entertain people more (as in "keep them interested in the music") by playing better quality material with better musicianship.
Roll on that pint. :-)
As far as the meaning of "entertainment" as "seeking merely to occupy the mass mind" a la Saturday evening TV, it'd be useful to remember that the correct name for this is actually "light entertainment". That name tells you everything you need to know about it.