I think VPNs can work great as you say but I don't think that is universal. It is very easy for them to become a bottleneck. And performance and stability iss

I think VPNs can work great as you say but I don't think that is universal. It is very easy for them to become a bottleneck. And performance and stability issues are not always obvious to the end user so get ignored. Obviously these issues can be resolved but there is always a limit on time and resources.