Yeah, I think so.
I point to the Wii and DS lifetime sells. Wii sold 100+ mill, DS sold 150+ mill. Okay, so people bought the DS and the Wii for different reasons, but now with a central console like the Switch, I imagine that it can hit 150+ mill handily. I would also point to the Switch pro+ as being another 3 year life enhancer. Perhaps maybe even other form factors for switch. I just don't see Nintendo dropping the Switch brand for a Switch U any time soon.