No...if anything the mobile market has stagnated, and is getting worse over time in my eyes.
So many mobile game releases come out these days, that good content gets continually buried. Google and Apple have done less work than Valve to create discovery tools, much less crack down on all the complete carbon copy games that keep releasing, and I don't see many mobile game sites or taste makers popping up to make people aware of indie content like console or PC.
Barely any pay up front games exist anymore as F2P has become the entrenched business model. The bulk of top grossing and popular games are the same few titles from the same few companies, vs. the success stories of the past on the platform.
I'm not seeing tons of smarter or deeper games getting successful on the platform to provide variety for people outside the casual gamer demographics. It's still just bite-sized game session experiences, not the long meaty RPG experiences even the 3DS gets. Touch controls still put limitations on game design, and only the Nintendo Switch is providing a good from factor tablet gamepad experience.
Mobile used to be a platform I was curious and optimistic about, occasionally partaking in say 5 years ago...but now...it's not even on my radar as PC and consoles with the indie scene provide more than I can keep up with.
All that has changed are Nintendo and a few other companies are porting their IP over to mobile, but it's consistently dumbed down titles. Even the few good things like the GO games from Square Enix get ported to PC anyway.
I do still have optimism it can improve, and the problems I have get countered by Google, Apple and other companies.