Think of SSH as the secure networking swiss pocket knife but that it is free for everybody to use, learn and script with. Now think how someone could make money out of it. They can't. So they start creating an alternative, that is so complex and hard to understand, that no person alone can manage it, and even the best solutions are unreliable, expensive and corporate. This is something you can sell and argue well that you need a shitload of engineers to maintain. This is VPN.

What should you use if you're smart enough to come to HN for reading? SSH of course.