Outside of us paying license fees has anyone ever been harassed by the FCC. I really don't see them busting down doors because someone is using to much wattage on example 50watt on channel 1 gmrs, or on the wrong freq. Is it just me?
If you want to see the FCC really react, step on the toes of I♥Media or Cumulus, or one of the big broadcast conglomerates. Those big companies have the FCC on a short chain and yanks it periodically. You'll see a LOT of FCC enforcement on the FM broadcast bands when someone pops up with a pirate transmitter. They've gone as far as to bust the landlords for allowing it to happen.
They'll react with public safety interference, if there's enough of a complaint, and said public safety agency does most of the hard work for them. They have busted people for interfering with public safety, or hams transmitting on public safety frequencies.
GMRS enforcement is pretty rare, but it does happen. Usually it takes a real dumba$$ that doesn't get the hint and keeps up with the stupidity. The FCC will step in and can levy some pretty hefty fines.
But, transmitting with a few more watts than you are supposed to on GMRS? You'll probably get struck by lightning a few times before the FCC shows up.
Generally if someone is halfway intelligent and doesn't get stupid with the power levels or other idiotic behavior, they'll never get caught. But if someone does get stupid and starts causing issues for other radio users, then the odds of something happening change.
So, generally playing by the rules and not annoying your fellow radio users is a good practice. If you piss someone off enough, they'll complain.
Also, playing nice on the bands helps everyone else. There aren't a lot of GMRS channels, and in a congested area a poor radio operator will quickly draw the attention of those that like to keep things running smoothly. The "do unto others" thing sort of applies here. If you do something that annoys the others on GMRS, they may start doing it right back to you.
But, no, the FCC is NOT going to show up in black helicopters or SWAT vans and haul you off to jail. What will happen is that the FCC releases their enforcement action in public record, and those of us that pay attention to such things will post it on this site. The perpetrators name and call sign will get talked about here and we all laugh about what a dumb a$$ they are.
Reality is that it's not hard to play by the rules/play nicely on the bands. There's really not a reason not to. Most of us have been doing it for decades, all within the rules, and not pissing off our neighbors.