Illegal viewing is treated purely as theft, when it is also the most honest demand signal a sport has.
Pirated streams are an audience, and rights holders should count them
Somewhere between a few hundred thousand and several million people watch major fixtures through streams nobody licensed. The industry response is enforcement, which is reasonable. The industry response is only enforcement, which is not.
Think about what a piracy figure actually is. It is a measure of people who want your product enough to accept a terrible version of it. Buffering, a stranger's overlay, four advertisements for something illegal, commentary in a language they do not speak. Anyone sitting through that has demonstrated demand more convincingly than a subscriber who signed up in August and forgot to cancel. That is a signal, and most rights holders throw it away because acknowledging it feels like conceding the argument.
The geography is the part that ought to be studied hardest. Piracy concentrates where the legal product is absent, absurdly priced against local income, blacked out, or scheduled at four in the morning. Those four causes have four different commercial answers and none of them is a takedown notice. A league that mapped its piracy against its own distribution map would find its own gaps drawn for it in detail, for free.
I would go further and say the pattern within a match matters too. Illegal streams show sharp joining behaviour around kick-off and around goals, which tells you something about how casual the audience is, and casual audiences are exactly the ones a cheap single-match product could convert. Selling a whole season to somebody who wants one derby is the sort of packaging failure that enforcement cannot solve.
None of this is an argument that piracy is fine. It costs real money, it funds unpleasant things, and the people running the streams are not romantic figures. Enforce away. Nobody is asking a league to sponsor a rogue site.
But a sport that only counts what it sells has one eye shut. The stream with forty thousand people watching a jittery three hundred pixel picture is telling you that your product is wanted and unavailable, and the only person in the building who reads that report works in legal, and he has been asked for a takedown list rather than a market map.

