On cassettes, recycling and bulk loading. I've only sent out a reloadable cassette for lab processing on three occasions, to three different labs, and they all handed (or posted) me the cassette back because I requested they do so. I guess some labs wouldn't want the hassle but it seems, in England at least, to be OK to ask for a cassette to be returned.
As for recycling, I guess the metal 135 cassettes at least do not contribute to plastic pollution, but it would be preferable that they didn't enter the waste system for landfill. Not sure what can be done there. How damaging to the environment are they actually, and what is the most responsible way to dispose of them? And given that industry is probably dumping gazillions of tons of waste metal, is it significant?
As for bulk loading. I do it for B&W and would consider for colour if the price was right. I am sure a lot of us bulk load. Equally I am sure that 90% of film users don't, never have and never intend to. The majority of those buying film aren't shooting a hundred (or a thousand) rolls a year to make it worthwhile bulk loading. Easing prices on bulk film just won't be a priority for E-K or K-A.
The existing E-K/K-A alliance seems strange but it functions. Might another solution eventually function better and more efficiently? Possibly, but setting it up would be prohibitively expensive and would still have to take into account all the legal obligations placed on K-A regarding the pension funds etc. It would seem illogical to mess with that part of the infrastructure. And if they did decide to rebuild their distribution network and it went wrong.....bye bye Kodak film.