Most people have no real reason to be concerned about police looking at their data, even if it does somehow happen (not in America, anyway). So as a
need, it's a vanishingly small market, limited to people who actually have something illegal to hide - drug business, child porn, whatever. As a
want is a different thing - people, convinced to be afraid of Big Brother, want to shield themselves. But that's still not a very large market, when it comes to people paranoid enough to actually do something about it.
If I had data that I legit feared the government finding, I wouldn't be protecting it with a home server - I'd protect it by encrypting the crap out of it and storing it on a pretty generic cloud service, not in my home or anything easily traceable to me.
