Ganni1987: They already do that for the HDD's on low end laptops, and make no mistake, sometimes they don't even leave you the option to add a normal one either.
True, but I'm not talking about low-cost flash-memory storage only netbooks here (indeed those have been around for years) - my fear is that sooner or later we'll get soldered M.2 SSDs on high end laptops as well :|. And, as it usually goes with soldered parts, they won't be top notch components from market leading manufacturers either.
When I buy a laptop, while I don't expect to have the amount of upgrade options I'd have on a PC, I'm not expecting to buy a SoC either. The way I see it laptops are becoming even less upgradable then SoCs which are getting more and more modular and extendable with pluggable additions.