The Beatles played some of the biggest venues of their day (Shea Stadium, Candelstick Park, Boston Gardens...) and yet all of those venues are gone today.
Really it was Woodstock that did the big paradigm shift, though. Bands went from doing two shows a night at a music hall to doing one show. Bill Graham didn’t want 3,000 seat bands. It was on to 10-20,000 seat venues and up.
Pink Floyd got put out at such venues in the 1970s when they started to count how many seats had been sold vs. how many they were being paid for (thousands less).
But that music business model is imploding. There are pop dance shows and old acts that still draw big bank (and draw it with tickets that can run $125-600 and more per ticket WITHOUT scalping or ticket handling fees) but the mid-size venues in some towns are corporate chains, closed to local acts and bands who won’t play the entire circuit.
Then there are the smaller rung general admission venues. Places that may pre-sell tickets but that don’t go through Livenation-Ticketmaster (who own venues and the contracts on the civic stadiums).
I’m guessing that Buddy Holly and his contemporaries would be quite pleased at how big rock became.