Although mobile gaming managed to leave both consoles and PCs/Macs behind for the first time in 2014, its position strengthened ever since and the figures for 2017 show that there is no turning back now. According to the latest report by App Annie and IDC, mobile game spending was 2.3 times higher than PC/Mac game spending and 3.6 times higher than the amount of money console gamers had spent during the same period.
https://www.notebookcheck.net/Mobile-gaming-increased-its-lead-in-2017.289336.0.html