I have for the same reason you stated (they don't want their car damaged and cba to park where it's less congested).
When I was a field support tech, we had two allocated spaces under the building (between two concrete support posts) for the 4 support dept cars. Because were weren't stupid or inconsiderate and used to driving and parking in difficult spaces ... we made 4 spaces from the two.
First car pulled in wide behind one post, second car behind the other, third car between the two and 4th across the front of all 3. We all left our keys somewhere we could all get to so we could have a shunt around if required.
And then we could come in and find (typically) one of the sales boys parked in the middle of a std 'Reserved to FS' space, effectively (if we weren't to block him in), taking up 3 spaces. Then when we asked them to move (as in 'now') they would often give us the 'I'm going out in an hour' which was even more reason for them to park it elsewhere as we could be in the workshop all day (but could be called out at any time).
If we didn't get them to move it (or let us move it for them) then 1) they would likely try it on again and 2) it would impact the few spaces we had in the carpark in general.
If they failed to move it then they would 'accidentally get boxed in ... sorry, he's walked op the town and taken his keys with him ....
Now, if they at least try to park as we did (making 2 spaces into 4) and / of had lots of kit to take out then we would often give them a bit more grace.
It still frustrates me round here as more and more people are owning more than one car that they (kerbside) park not_quite_a_parked_cars_length away from another car, again, taking up two parking spaces (and because it could be their second car, leave it there for a week or more).
And then you have all the massive vans that people are driving home from work and parking in the street outside other peoples front windows ... ;-(
Cheers, T i m