I think "the mobile revolution" is a joke and never materialized. 95+% of mobile games are unoriginal clones with layers of mechanisms to reduce fun unless the user pays. People who enjoy games have largely abandoned mobile, save a handful of decent titles that were ported from other platforms.

Mobile-first gamers are: people (mostly kids) who are so naive about games they will accept garbage (or cant afford a better gaming system) and whales who enjoy spending large amounts of money to move up the leaderboards.

Mobile gaming C-level's loved talking about the mobile revolution for a decade, but I really think it was all optimistic nonsense in service of their fundraising.