Utd V Liverpool is the biggest game in the PL. It also has the highest viewing figures for any PL match in the UK & abroad. Sky are hardly going to broadcast City v Stoke are they. People would be cancelling their subscriptions en masse.
And yet here they are with Leicester vs WBA and its scintillating 1st half.
If wanting to cover the mass market, a football business will be broadcasting the potential entertaining games whenever it can.
If a recent historically predictable 0-0 with a 'masterclass' is pushed to the max as the 'biggest game' entertainment, then the mass market will as you say, be voting with their money.
Football viewers are made up of a range of people (not limited to): single team fanatics, single team followers, multi team followers, football followers, sports fans, casuals flicking through.
I'd argue that all but the 1st group are the ones a football business needs to work on to keep, because they consist of people who like to watch football
and/or be entertained too varying degrees.
The 1st group is a complete given for a football business. It's not going to churn. They'll pay to watch any football, especially involving their team, end of.
The other groups want football and entertainment, if they don't get it for their outlay they'll cancel or find pastures new.
If a non fanatic had to pay tv to watch Pearce's dross season where City scored less in an entire season than in the 8 games this season, then they'd rightly be questioning why they were paying for that entertainment.
Ditto saturday's 0-0 - which was a double whammy for the mass market - hyped up, with a lack of entertainment on top.
A fanatic still watched both of these examples. Poor sods.
People might label (some) fans plastic, but they tend to start by following the most entertaining team(s) at the time of getting exposed to the business of football (unless fanatics/family led etc).
And finally, Liverpool vs United is not the biggest mass market game in the EPL for the UK and the world.
That'll be City vs United in recent years.
(Google it, though it's hard to find...)
Due to the football business requirements of satisfying the mass market.