> Basic hygiene security hygiene pretty much removes ransomware as a threat.

It does not. The problem is, as long as there are people employed in a company, there will be people being too trustful and executing malware, not to mention AI agents. And even if you'd assume people and AI agents were perfect, there's all the auto updaters these days that regularly get compromised because they are such juicy targets.

And no, backups aren't the solution either, they only limit the scope of lost data.

In the end the flaw is fundamental to all major desktop OS'es - neither Windows, Linux nor macOS meaningfully limit the access scope of code running natively on the filesystem. Everything in the user's home directory and all mounted network shares where the user has write permissions bar a few specially protected files/folders is fair game for any malware achieving local code execution.