In 30+ years in law enforcement, I don't recall a ham radio ever being reported stolen, even from a car. Thieves want items they can quickly get rid of on the street. Things like TVs, jewelry, guns, etc. are the targets.
I know someone's gonna come back with "Mine was stolen 2 years ago," and maybe so but with a burglary every 23 seconds in this country and a ham radio stolen every 15 years, well, I'll just keep doing what I'm doing.
Had it happen to me about 25 years ago; my Cressida was outside the garage 'cuz my side is full of yard tools, mower, other stuff, but I guess I didn't lock the doors. They got my KDK FM2033, which I grant wasn't hard mounted, just sitting in a hole in the console area under the heater controls, and the trip computer/display module. No other damage.
It was really a bunch of kids going thru the neighborhood, several neighbors were hit. The stupidity and rashness of these kids was that they pulled all the mail out of someone's mailbox at the street, dumped it on the ground and left it. There were a few boxes of brand new checks, they could have had a high time with that for a few days!!
I dutifully reported it to my local PoPo, officer came & took a report. Of course, I had no serial number because used from another ham. Worse thing was, it was recovered from a ditch in just a few days, but PoPo never bothered to check description against theft reports. A year later an aspiring ham bought it at the police abandoned property auction & showed it to his neighbor, who remembered my incident and called me.
Don't even get me started about the time slightly more professional thieves broke into my work truck at my contracted substitute while I was on Xmas vacation. Over $17,000 of damage & equipment gone away; including equipment that belonged to 2 Federal agencies. Same PoPo dept, zero help from them for a nominally Federal crime.
Sorry for the long rant.