Yes. (Among a million other things. ALL the rules that determine who is a billionaire and who is a beggar are social choices, because wealth is a social relation. The fact that there even are these particular different possible ways for people to be treated is a social choice.)

"Possession is nine tenths of the law."

(Though Wikipedia tells me it means something else:

https://en.wikipedia.org/wiki/Possession_is_nine-tenths_of_t...

My assumption has always been that the phrase meant that 90% of law is related to who owns what, basically.)