@jalefkowit There are people at work cracking the problem of developing Kodachrome. This is from 2017. https://shootfilmco.com/blogs/shoot-film-co/kodachrome-processed-in-color-seriously
But the amount of undeveloped film still sitting out there must surely be diminishing: by the time someone perfects a homebrew process that gets good results, there'll be nothing left to do it to.