Will we even have executable files going forward?
Other besides app?
No
Programs as we use to know on the x86/64 machines are going to be obsolete.
Not directly in one day....but in little steps.
Its a win win for MS and the multiple developers and compagnies who ever used to build programs.
I try to explane.
When you buy ( for example ) cool edit pro, you buy it from the compagnie who build that darn thin.
The compagnie makes money, Microsoft is not.
But when you feel like not buying you can stil download it on multiple "pirate" sites, so you steel it.
The compagnie receives no money, as Microsoft.
New situation, where only apps can be installed through the windowsstore and executable files dont work anymore.
Compagnie builds the program, puts it in the Microsoft store.
User has no choise then to download it through the same store, so piracy is limited.
The compagnies earns his money, but also Microsoft gets a cut of the deal.
Win Win
In the near future you wont be able to install anything outside the store.
Ofcourse there shall alway be some methodes,
but not for the ordinairy people who doesnt care or dont have the knowledge to do so.