I've tried composting, and don't have the patience for it. Lots of folks live in apartments or places with HOAs that forbid it.
There's also the benefit that industrial composting can process things like dairy and meat safely that can't be home-composted.
We have made progress in that for recycling, but there are two trucks that come by my house.
Cardboard, at the very least, would generally be immediately ruined and rendered non-recylcable doing this.
I suspect you'd environmentally gain more from improved recovery of more useful materials from single-stream waste than you'd lose from no longer recycling cardboard products. (Especially since a large amount of dedicated cardboard recycling is itself going to be spoiled by the inclusion of greasy pizza boxes in that stream).
There are facilities that sort the entire stream, partly because diverting material away from the landfill saves cost there.
I'm happy to put my food waste in a little box and have the government come round with a truck once per week, at the very least its rotting somewhere miles away from me.
I don't think i have the space or knowledge to do it myself
No signing up here, you just put the correct boxes out on the correct day and some chap picks it up.
Its slightly frustrating having six different bins and having to keep a schedule pinned to the fridge but it kinda works.
See: How current landfills work
It's really not that hard to fill up the compost bin and then put it out with the trash and recycling every week. Municipal composting is great IMO.
In the case of hydrogen - it isn't that difficult. You develop on site hydrogen production capabilities and replace the fleet returning to site to re-fuel. Self contained.
Getting rid of the old infrastructure - good local jobs to do that, and upgrade it with something new. Come on now, that was too easy.
The point of this whole post is Fertilizer. You eventually have to collect the distributed waste (or compost fertilizer) to a a centralized place. Caveated that the resulting mass could be decreased, but also lose the opportunity to make compost tea, feeding any edible mass to animals, or vermicomposting to get even richer output.
Also lets not discount the distributed cost to teach millions of people how to properly blend (mix grass with food waste etc), turn (else you can either cause fires or create methane), harvest (when's it done), and then redistribute the output.
Yes we could all become home gardeners, but then expect to see our GDP to decline as Software engineers, Lawyers, architects et al. star doing "farm work" and labor.