CGD: Awesome Video Game Data 2017
I follow the GDC (Game Develeoper Conference) channel on Youtube and, just right now, I totally recommend you to do the same. Great amount of excellent talks (of course there are some exceptions, like the lame at-the-time-GDC-board-member Peter Molyneux making plain simple propaganda).
There is one that I just watched and is very eye opening: it the annual talk from the guys of EEDAR (a data consolidation company) presenting numbers of the whole industry. The talks about prices, sales, regions, mobile/pc/consoles. Everything!
It is a must-see.