I would say home consoles as they are now, last until 2030. After that, streaming will probably take over. That's not to say a traditional home console won't be available after that time, but if it is, it will be much more expensive since it will slowly become a niche product.
For console upgrades, I would hope they decide to make the "Standard" and "Pro" editions at the same time and launch them together. Use the same type of hardware and API, with one console being 2X-3X more powerful than the other. This should help greatly with more balanced sales and better support from devs for both systems.
Mobile will continue to grow, and all of the console companies will more than likely jump in at some point, but they will always focus on their home console, streaming, and online service first, before mobile (except NIN).
PC gaming will continue as is, but the future will probably lean towards streaming like consoles. High end PC's will probably also become more niche and expensive around 2030.
Streaming is in its early stages, but is mostly being held back by the old network infrastructure. This is going to take between now and 2040 before the first world is completely upgraded to a true fiber optic system. 2030 should be when streaming finally starts to become more of a "threat" to gaming as we now know it.
AR and VR will probably remain niche for quite some time yet. The main hurdles holding it back are wireless tech and GPU tech. The easier it is to wear and move around, and the more realistic it gets, the better it will sell. Over time the price can drop as well leading to a broader market. 2020 to 2030 will be an interesting time in this sector.
PS1 - ! - We must build a console that can alert our enemies.
PS2 - @- We must build a console that offers online living room gaming.
PS3 - #- We must build a console that’s powerful, social, costs and does everything.
PS4 - $- We must build a console that’s affordable, charges for services, and pumps out exclusives.
PRO -%-We must build a console that's VR ready, checkerboard upscales, and sells but a fraction of the money printer.
PS5 - ^ -We must build a console that’s a generational cross product, with RT lighting, and price hiking.
PRO -&- We must build a console that Super Res upscales and continues the cost increases.
