Curiosity: Does the record-setting series sales of 8 Deluxe being "obvious" or not actually make it less of a business success? Does Nintendo get less of a share of the money rolling in from this game because "well not enough other things came out so people are starved for games"? How many games is the average console gamer expected to play within the first two months of a brand new system's life? Sales of Zelda exceeded the number of systems sold to play the game on. 8D is the fastest selling game in a series with some of the highest sales ceilings the industry has ever seen and have consistently proved to be some of the longest sellers (didn't Mario Kart DS continue to show up in sales charts literally like 5+ years after it released?). These are successes, "expected" or otherwise. If it's selling a ton because people are starved, then that's just money sailing over the heads of third parties and straight into Nintendo's pocket because they were (understandably) afraid of jumping in early. And...that's Nintendo's fault now? Pretty sure their massive checks will continue to clear.
As a Switch owner, I already have a backlog of more games than I have time to beat. Don't even have Mario Kart, though I suppose I'll likely get it eventually. At this point I don't personally expect the "drought" to be an issue. And either way, the cumulative library is only going to get stronger. Games like Zelda and Mario Kart will continue to be enticing to new Switch owners in September just as they are now. I don't know if 8 Deluxe will become the best selling Mario Kart ever or anything so grandiose, but financially it's already a win for Nintendo, one that's only going to become a smarter investment for them over time.