LOL - Again, did you not notice the "if"? That implies not everyone cares about that functionality. Perhaps you didn't know that rolling the eyes
rolleyes
also indicates sarcasm.
And you assume that everyone has all the equipment they need
It is fun, in a sad sort of way, watching folks who cannot admit that others might be right too, and instead dig themselves deeper and deeper.
But yes, in this case I am assuming they already have a router with an Ethernet switch, or wifi (or both) since most people want Internet access and even the basic residential gateway devices provided by ISPs support one, or the other, or both. Very few today go directly from computer to modem then out to the Internet.
You, on the other hand, assume everyone already has some type of portable storage, and they don't mind hand carrying it back and forth between each computer.
And yes, plug and play is right. Plug the wireless router into the modem, connect the computers to the router, and boom - Bob's your uncle. You may have to reboot the computer, or enter the wifi passphrase - but one would have to do that for Internet access anyway.
And contrary to what Lex seems to be implying, setting up sharing over a network is not hard - especially between W10 computers.
Sure, "IF" the user already has an external drive or flash drive (big enough for all the files they want to share), they can lug it back and forth between computers each and every time they want to share them. Like that's really convenient - especially if the external drive has its own power supply.
(Ummm, I'm being sarcastic again.). I am sure if Computer #1 is on the top floor, East end of the house, and Computer #2 is in the basement on the West end, everyone would love running up and down the stairs.
(Do I need to say it?)
But with sharing enabled, everyone can stay in their chairs and with just a few mouse click, transfer files back and forth all they want.
and that 100mbps is fast enough for them.
LOL You're the one who keeps making assumptions. Again, with just a couple seconds of homework with Bing Google anybody can easily see several of those under $50 routers support 1Gbps Ethernet and 802.11n and some even support 802.11ac.
And for the record, I am not suggesting folks settle for an under $50 wireless router. I was just illustrating how the necessary network equipment is not expensive - though most folks already have it on hand.
You can keep arguing and suggesting that your way is the only way anyone would ever want to use, Lex. That's up to you. Everyone else knows other wise. And of course no doubt some would argue there's always cloud storage for sharing too. But that's for yet a different discussion.