I wish that's the case.
But most probably we won't be having many laptops like that. They will have the wireless connectivity configuration but some laptops wouldn't support the wired connectivity anymore.....and in future....I highly doubt we would find any laptop which supports wired connectivity.
I think most Apple Macbooks, and Google Chromebooks no longer have Ethernet wired networking ports. But, Ethernet ports are more common on laptops which are thicker, gaming laptops, and have disc drives.
I guess a lot of people also rather have more storage, faster RAM and a better CPU than a Ethernet port. A lot of people may not want to spend an extra $50 on a laptop with a Ethernet Port, but may pay an extra $50 for a laptop with more RAM, faster CPU, and more storage.
For the people who really care about that stuff, they’d buy a desktop or have a steaming box connected to an Ethernet port.
You’d be surprised at how many people don’t know about the benefits of an Ethernet cable or care. The average consumer wants the convenience of using their laptop wirelessly in another room, and thinks it’s too much of a pain, or looks ugly, to buy/make an x-length cable just to use slightly faster internet.