Putting aside the price, indie games like Issac or Setsuna that are already available on multiple platforms for quite some time aren't expected to be system-selling killer apps. Issac may be a good game but the Switch doesn't provide any unique feature (unlike if it has another screen or IR motion sensing control), any new content will surely be available on other platform soon (unless Nintendo pays them tons of money to keep that exclusive, but it's no Bayonetta). Setsuna isn't really a top quality rpg, if it's not a launch title, it won't be getting such attention (just look at its reception on ps4).
The fact that ppl are looking into these with desperate interest goes to show how limited the library is. Until the next big first party game (Mario, Splattoon etc), there's just nothing compelling, so much so that ppl have to be scrapping up ports like these.
