Which is kind of useless for most of the points you described at the end. There are plenty of comments here really proving that you can scam even in person interviews. Let's say you are not scam, you pass an interview. You can still do all of those things while you work.
The only way to prevent this is by having keyloggers and similar tools on the work laptop so that you can actually see what people do. And even then, if someone does "enough", would you really check? Probably most people nowadays wouldn't care, as long as you deliver.
The truth is: most people are honest, they do "normal" work, they get a raise, etc. Then there is a percent of people which exploits the system. A system that let's be honest tries to profit from them too by giving lower wages, etc.