Nintendo has some very hefty goals for the Switch. Things have certainly started off on the right foot, and Nintendo has every intention to keep that going for many years to come.
According to Nintendo president Tatsumi Kimishima, the goal is to support Switch after the 5-6 year mark, which is the traditional run for game consoles. The system could be supported anywhere between 7-10 years. No specifics on how Nintendo intends to support the platform this long were given.