It's pretty obviously an out-of-date measure that is inevitably going to end.
It's ludicrous to leave people in the UK unable to watch the Premier League on TV while the rest of the world can happily do so. Especially as it doesn't actually stop anyone who wants to watch the games from watching them. It just forces them to watch them illegally and in worse quality, even if they've spent money on BT, Sky, Amazon Prime, etc. The genie is out of the bottle, you can't protect the Premier League or lower leagues from the internet by ripping off fans who want to watch the Premier League and excluding those who lack the capacity to find the games on the internet.
You also have the option of doing what other leagues do and scheduling no or fewer games at 3pm.