How is this different from Git's model of development?
Both of those features have been available in Git since the 90s. You're not revolutionizing anything by proposing a migration to an even less ubiquitous protocol than HTTP or SSH.
I did not propose that. I didn't know git had a consensus mechanism built into it other than manual resolution of merge conflicts. A simple blockhain over https is easier for me than trying to get git to do something it wasn't designed to do (it works with files and repos, can you imagine having a commit+push+merge for every word edit in my example?) there are ready made libraries for this. The path of least resistance to acheive desires goals is what I would take. To each his own, blockhain can solve these problems outside of crypto.
Another big problem area is PKI as well. I'm sure you've seen stories about suspicious CAs, a distributed ledger of CA issuance and in the wild certificate observations is one legitimate goal that can be solved by blockhain (better than centralized CT logs that don't take ITW observations).
Git has cryptographic identity baked-in, so people can assert authority over their own contributions. That enabled mailing groups and IRC channels which encouraged discussion before arriving at a consensus and merging relevant files to the master branch. It's not decentralized, but it could just as easily be hosted as a torrent if that was something people cared about. However, decentralized development has historically been a farce, so most people use something like Github to control and moderate their repos. You're right, this is a "to each his own" situation, and there's literally no one on the "hosting Git via BitTorrent" side of the room. Moving to a less-efficient, more-convoluted process does not fix this. I've been following decentralized technology and the likes of Bitcoin for almost a decade, and the successes and failures of the space are self-evident.
> Another big problem area is PKI as well.
To who?
To the scary boogyman white-supremacist KiwiFarms NBC fearmonger types? Yeah, have fun getting anyone to rule in favor of them. To the rest of society, centralized CAs are a boon. Not only are they wicked-fast (good luck querying a blockchain faster than a DNS request), they go out of their way to prevent systemic abuse and domain-squatting in ways that crypto can't. You want to apply PKI to this space? Convince me that it wouldn't start another FTX-like situation, with powerful individual exerting economic power to centralize the market a-la crypto exchanges.
Take a text editor, it would be improved if edits or saves which are just transactions are stores on a blockchain if the text is being stored and shared synchronously and live between devices.
Basically, people have more devices, want to collaborate and add redundancies to important systems which means changes to data (transaction) where the historical sequence of changes is important to someone can use blockchain, but of course it isn't neccesarily the best solution, especially if there is trust between nodes or out of sync nodes causing a mess can be solves by simpler solutions.