Laptops are used as the primary computers for a lot of people. We can use external drives but more capacity internal to the laptop is welcome. Some high end laptops have m.2 SSD slots and also a mechanical drive bay.
I see a M9T 2TB for $75, new, free shipping on Ebay right now and usually about $95. Cheap too. A lot of laptops you can't configure from the factory with this drive even.
EDIT:You could argue that with desktop PCs and external 3.5" drives, that there really isn't any demand for larger drives their too, because 6TB is enough. But that space will still grow from helium/SMR and later, HaMR after the server market even if most people don't need it. So why not laptop drives too. First the external 2.5" 4 platter ones, then the 9.5mm 3 platter ones and 1 platter 5mm and 2 platter 7mm ones.
EDIT: Also amazing laptop manufacturers like Lenovo and others still don't allow this drive as an option from the factory. "Up to 1TB" blah blah