alt Hacker NewsAkihabara was where runoffs and spillovers from cutting edge electronics accumulated until ~2010s. There used to be tons of failed experiments and EOL'd enterprise gears washing up. After that, supplies shifted to Taiwan and then to Shenzhen in China.
As far as gaming is concerned, the "gaming" parts of Akihabara mainly concerned locally produced pastel toned 2D slideshow pornographic games("visual novels"), the genre that lead to gacha games like FGO. Local populace is horrible at handling 3D first-person content in general and that never helped.
Non-console gaming in Japan is growing somewhat but a lot is also going into phones, namely Genshin. So where the trend is headed is still pastel toned soft-porn games without much PvP.
Phone games seem to have been popular for a good decade. I find the extravagant advertistments in stations like Shinjuku are always rather impressive but I never quite get into any of those games like Genshin and Honkai.