Gaming laptops are kind of in their own category, and have always been pricey. You are paying for a battery, screen, keyboard, touchpad, probably a camera, speakers, and overall portability. Add all that to a console and you are probably in about the same price range.
TVs have built-in speakers better than most laptops and most people already have one of those which is what consoles are generally intended to connect to.
I wouldn't do any serious gaming on a laptop's keyboard, so I'd end up buying and carrying a full-size keyboard for gaming.
I wouldn't do any serious gaming on a trackpad, so I'd end up buying and carrying a mouse too.
If I was a streamer, I likely wouldn't be satisfied with the video quality, fixed focus, fixed angle, etc. of the usually cheap built-in camera, so I'd end up packing a webcam anyway.
Consoles come with at least one game pad and games for them are designed to use their stock controller, which eliminates the need to buy additional input devices in most cases. While you may need to buy additional controllers for local multi-player, you need to do that too on a PC/laptop in what few games where that is an option at all.
So, starting-costs-wise, a console starts much lower than a gaming laptop.
Me, I'm just waiting for something decent under $200 worth upgrading to from my GTX1050.