"Mainstream" or "majority" in context of Nintendo is a $20-40k/yr white collar household with 2 kids. The REAL mainstream. Some would have real ashtrays on a dining table. ~None of them had bought any of TVs over 42" with 4K resolution and HDR support in past 10 years.
Though, I do wonder how globally mainstream is such a household buying Nintendo hardware. Admittedly it could be somewhat of a local phenomenon.