No way. This year is going insane but i do expect next year to be pretty great as well. I think it can manage to sell close to 28-29 millions this year and maybe more of a 23-24 millions next year. Which is still insanely good.
We have the first MH games coming, Zelda BOTW 2, probably some other major games like Bayo 3 and SMT V. If the sales slip a bit, they have a pro version releasing apparently which should make up for the sales reducing and of course the first price cut for the console. No way it slips under 20 millions tho. No way. Too much momentum rn it will keep it atleast for the first quarter of next year. And then they will start playing their cards and it will ride along nicely.