On a serious note, I'd say in 2016 people are probably playing a diverse range of basses so it's not just P or J anymore.
Yeah, if you're going to rock shows you might see a lot of P-basses but if you hit up a wider range of musical styles I think you'd see a lot of other basses. Grunge had the Spectors and Gibsons (G3, Ripper), Funk had the Stingrays. 80s New Wave bands I'd listen to had Peaveys, Hofner/Gibson-styled basses (Duesenberg for the Tears for Fears guy), etc. I've seen some Emo bands prefer Mustangs or Jaguar basses.
Sometimes a new genre of music forms and the passionate, starving-artist musicians were playing whatever was most affordable off the pawn shop wall. Folks I know seem to play ESPs, Ibanez, Carvins and Schecters.
On a personal note, I spent a lot of time with a Jazz bass as my #1 but shifted to P-basses lately just because I like the fatter sound and how minimalist they are. PJs too, that's if I want some extra growl or pop. P-basses just seem to slot right in the mix well when you're competing with more than one guitarist or other instrumentalist. I did find Jazz basses worked really well in a 3 or 4 piece band (if one person is lead singer).