In theory. In the US, at least (I don't know about other countries), some judge positions are voted in, In that sense, they most certainly are politicians.
On top of that, HAVE YOU SEEN OUR SUPREME COURT. THAT SHIT'S THE HALLMARK CHANNEL OF "OWNED BY OTHER ENTITIES", be it actual politicians (Trump) or CEOs (also Trump), many of whom ARE both executives and politicans (again, not only Trump, but also a number of other reps & senators).