I assume part of it is to keep things competitive. Like how formula 1 limits the tech that cars are allowed to use. If the richest team with the best equipment always wins, that really takes the fun out of it.

Too much technology also can spoil the fun by being a distraction from the rest of the game. A few years ago there was a game where Jared Goff was receiving play calls through his helmet radio but his radio wasn’t working properly. He would just stand on the field looking stupid and helpless for 20-30 seconds before every play, trying to listen to instructions. It looked bad and was a lame experience for the fans.