What's up with PCMCIA cards on laptops?

PCMCIA was replaced with ExpressCard technology on business laptops.
I worked at IBM and then Lenovo in Procurement Engineering jobs.
Computer companies make their profit on the sale of new computers.
The customer surveys are always studied as what will people pay more for based on the cost to do it in a product.
People with workstations buy or build desktop-tower PCs. They are not limited in space that tightly.
Laptops are for portability.
The laptop technology advanced to include various forms of wireless, high amounts of internal memory including solid state capability, an SD card slot, and some business laptops have a little slot for 4G cards.
USB technology allows for add-ons of devices related to many functions.
Lenovo even had a dual graphics card capability for a while.
There's a power limit before heat becomes the big issue.

People wanted thinner and lighter. They want portable.
The only thing not focused about laptops is external graphics cards because everything else can use the existing ports. An external graphics card setup makes a workstation. Back to the towers again.

No purpose that people would pay extra money for.
Some Alienware have a custom port similar in function.
http://www.alienware.com/landings/laptops.aspx
Optional Graphics Amplifier

Asus showcased a unit at the Consumer Electronics Show last January
http://www.tomshardware.com/news/asus-rog-xg2-graphics-dock,30941.html
ROG XG2 using USB-C for communication
http://unlocked.newegg.com/asus-rog-xg2-docking-station/

PCMCIA connections were not fast enough. It is speed of Thunderbolt3 and USB-C that can keep up with high end cards.

It is a niche market for those buying new laptops. All the other Expresscard and PCMCIA capabilities are already available in other form factors, but external graphics cards, which existed for a short time, are back in the offering through new fast connections to make them worthwhile, for those that will pay for the units.

Razer Blade Stealth also:
http://www.notebookcheck.net/...669.0.html They were popular several years ago, but now considered legacy hardware.
With the rise of lighter cheaper low profile laptops, makers decided to drop the technology. Outdated.

They were popular several years ago, but now considered legacy hardware.
With the rise of lighter cheaper low profile laptops, makers decided to drop the technology.

Outdated.