It’s a rhetorical non-answer, “the 35th anniversary release was only available for a limited time because it was only available for a limited time”.
There are hundreds of anniversary releases of games that are made permanently available - hence why people asked Nintendo why this one was given an artificially short availability so often that it became an FAQ question. They own the rights, they can sell it indefinitely if they want.
Eg: search Steam for ‘anniversary’ you’ll find 600+ results.
I love how you just assume that everyone on Lemmy is from the US.
… And it is funny, it’s something a 5 year old would announce, so her chuckling reaction was actually quite humanising.