The problems with laptops is (a) cooling, (b) speed and (c) ease of upgrade/expandability and (d) cost.
Almost no laptops come with NVme drives because of heat. I have an Acer laptop in which I put a Samsung NVMe drive. It throttles constantly causing program freezes crashes and lagging. SATA so far has been the only "recommended" drive.... so slow!
The HDDs are also poor performers. 5400 RPM. The reason I put a Samsung NVMe drive in my laptop was because it took nearly 5 minutes to become fully booted up and usable with Windows 10 Pro. Granted, it had all the Manufacturers bloatware installed, but that is still abysmal.
The cost of laptops here have increased by almost 40% in the last year. I expect they will increase by at least another 60% in 2019 due to memory, graphics, SSD and other shortages. CPUs possibly too...
My laptop cost me $1299 in January 2017. It's now $1799 for the same one.
A half-decent 17" laptop here will set you back $4000 AUD. I can build a far more superior performing desktop for 25% less than that with a 27" monitor that will run much cooler and be snappier and more responsive than a laptop.
Your upgrade options are extremely limited in laptops. Maybe a little extra memory, maybe a bigger hard drive, not much else. Not happy with your laptop? You can't just upgrade it an save on cost like you can with a desktop; you're up for major replacement cost. And selling second hand.. People want stuff for 10% of the purchase cost. A $2000 laptop will be lucky to get you $200 after 12 months.
For school and business work laptops are great. I don't see them as being "serious" gaming systems for quite some time, and never will they be affordable in Australia even if they do make the grade. Cooling is ALWAYS going to be an issue, which hinders how far manufacturers can push them.
I know I'm going to get down voted for this, but the "oooh... laptops are the thing right now, I've got to have one" mentality is just insane.