I still don't think the parallel between Amazon and Genius works. Amazon is hugely dominant, where millions of people use it daily or weekly. I'd expect that the overlap between Amazon users and online shoppers is very high. But given Genius's semi-failure, I'd be hard pressed to believe that Genius has a similar mindshare among music listeners or lyrics looker-uppers.
I also don't think Amazon has spent that like you say on "getting that checkout process as frictionless as possible". What they've spent it on is magnifying Amazon's dominance and profitability. And a checkout experience is 25 years old at this point; it's not exactly a hotbed of innovation. My random local bookstore is using some perfectly solid package that does just fine. It's no harder to check out there than Amazon. And as a bonus, shopping is easier and they're always going to send me an authentic copy of the book.
Definitely not arguing your local bookstore isn't a nicer place to buy a book from! But I'd disagree that (especially once you're in the ecosystem) buying something on Amazon isn't pretty frictionless.
Re "I'd expect that the overlap between Amazon users and online shoppers is very high." Honestly, I'd expect the same with Genius and 'people who look up lyrics often'. I mean - I can't name another lyrics website (apart from maybe songmeanings.net, which I'm not sure is still alive?) - and as someone who looks up lyrics a fair amount, Genius appears at the top of Google enough, and is far less spammy/shitty than any of the other random sites that I'll often just start there...
Allll this said, perhaps my analogy wasn't perfect. But I stand by that if I was in a band, and I wanted to share my lyrics - as well as my own site (assuming I could be bother to maintain than AND all the social stuff), I would make sure they were on Genius. Perhaps with decent explanations for things that I added myself.
I'm not sure how you think you have the standing to tell me my own experience of shopping on Amazon just never happened. Regardless, that's a sign to me that further dialog will not be productive.
I also don't think Amazon has spent that like you say on "getting that checkout process as frictionless as possible". What they've spent it on is magnifying Amazon's dominance and profitability. And a checkout experience is 25 years old at this point; it's not exactly a hotbed of innovation. My random local bookstore is using some perfectly solid package that does just fine. It's no harder to check out there than Amazon. And as a bonus, shopping is easier and they're always going to send me an authentic copy of the book.