Depends upon where you live. A casual observer around here would suspect that the HC stickers either come with the title, or with your/your spouses law degree.
Seems most every Mercedes/BMW/Lexus in the local shopping center sports one ... often driven by the trophy wife, complete with crotch hair hugging spandex exercise shorts (and sometimes the Master of the Universe himself, very possibly in the _same_ shorts), who parks and _runs_ in to get Margarita mix.
What a great country ... where you can be illiterate and still drive such nice automobiles (judging by the number of these same luxury egomobiles, routinely parked in clearly marked "no parking" areas).
... the practice, like many of the other scofflaw attitudes in this culture, is endemic.