Okay. Everyone is different. If they can point, click and type they can open a terminal and type something simple.
I have to say your car analogy is more difficult.
It’s just a matter of explaining a different process than what they are familiar with to install something. It’s not hard at all after you show/explain. Just different and in my opinion easier than an exe.
If you can open an app you can open the terminal. It’s not a daunting task.
There should be more deals when you click add services.
Understand on the latency possibly being an issue. I did see they have servers in France now. Maybe you could do some ping tests.