WiFi credentials maybe but I can't imagine the devices hold Netflix user passwords, I've never encountered it but surely the Netflix API just negotiates an API key tied to the user?
I just used a tool called BIP39 generator on and offline machine which you can feed entropy and it will generate a bitcoin private key. then sent funds to that address.
I manage a password manager for an MSP that supports hundreds of Azure tenancies with dozens of engineers. 2FA codes in the password manager in a shared space is far safer than a non synchronised account with no 2FA. Since the TOTP code is not accessible too, it also means that password manager breaches are time limited.
Surely you can just set the timer most washing machines to start it a few hours after you leave? Personally though having washing machines running in an empty house makes me nervous.
You make it sound like it hasn't already been tried. As far as I know every time you remove the social safety nets you turn society into a Dickensian nightmare where the poorest in society struggle massively, not 'innovation' or 'freedom'.
For home office/SMBs routers you can't really beat Draytek boxes. I've had ones last 9+ years and they receive regular updates for 5+ years and are extremely solid. They have devices that have wireless radios in too but I tend to buy a used Ruckus WAP and set that up in addition because the coverage on those beats most things out there.
Folders in Windows can be network locations or internet locations without any guarantees on their access speed, makes sense to show to the user that it's still doing something.
As someone who surveys different organizations networks day in and out, the amount of unpatched and out of date Exchange servers (and other internet facing services) I see is ridiculous. Most sysadmins don't have a tangible idea of the risk they take when they set this stuff up. At least Office 365 is patched and monitored on a regular basis and has actual security teams tasked with looking for potential exploits.
Along with what everyone else has said some vendors such as Meraki and Ruckus have separate radios just designed for monitoring the spectrum and making changes accordingly. Groups of APs will automatically decrease their power and channel swap to avoid channel overlap etc.
People do this in my company even despite us having SharePoint which has decent enough support for collaborative capabilities and should in theory get rid of any need for different document versions, but that escapes many people.