Laptops were a big part of the development of 2.5 drives, with them moving toward SSDs sata/nvmes, the need or develpment for 2.5 mechanical has stopped. The 5TB was not part of the usual laptop drives as it was a 15mm thick drive, but i dont...
If you think the DriectStorage 1.1 will matter in the future, then invest on a decent m.2, if you dont think it matters, i would go with biggest Sata SSD you can afford.
SSDs are wonderful tech on todays age, specially for people coming from spinning disks, but the difference in gaming between ssds and even sata or nvme is unrecognizable for most, for now M.2 can fulfill most needs 2-4tb versions, i feel we might...