This may be true in some areas but where I live every retailer (gamestop, target, best buy, walmart, fred meyer) is full of available switches, with no bundles attached, selling at MSRP (no additional markup). It's been like that for about a month. I'm sure they will start selling out again as we get closer to the holidays. That said, I'm with the OP in that Nintendo would make more money off me if they sold the controllers for less. So far I bought 3 games (Mario Kart [again!], Street Fighter II [again!], and Super Mario Odyssey), all of which have multiplayer modes, but none of which we have played multiplayer more than once because using the tiny joycons sideways is just terrible, but the cost of an additional controller is too much. It's not that I can't afford it, it's just that the value isn't there. So far, none of the games is good enough that it's worth spending the extra $$ to buy another controller. If the controllers were $40 I would have bought 2 of them by now, probably. I get how silly that sounds.
Many games, especially the ones that let you play with a sideways joycon, are fully-functional with gamecube controllers and an adapter. I know Mario Kart is for sure.
The drawbacks are the missing motion, "minus", and ZL buttons. If the game works without that and you have some gamecube controllers already, getting an adapter could be a good idea.
