No, I think they've finally found a hardware concept that can stick long term and they can keep selling for decades (ala PlayStation) as opposed to a fad that will be huge for one gen then disappear the next (ala Wii/Wii U). I see no reason for them to go back.
Pancho A. Ovies
Nintendo Switch in Japan (Famitsu): 2018 vs. 2019
PlayStation 4/Xbox One/Nintendo Switch: 2018 vs. 2019