I think a lot of people double dipped on the PS2 and DS when better versions hit the market. Nintendo is making it pretty hard to choose a Switch Lite over the standard Switch and even harder to own two systems based on crazy decisions like tying certain saves to a single system.
A sleeker model would boost sales into that territory but I don't see one on the horizon based on the news I've seen so far.
Have you seen entire families of four or more members having a switch each member? I’ve seen it.