Network latency can be one reason but I found the lack of optimisation to be a bigger factor. As long as a programme somehow works many developers won't try to

Network latency can be one reason but I found the lack of optimisation to be a bigger factor. As long as a programme somehow works many developers won't try to optimise it. That gives us Electron apps which are easily 10x slower than a comparable native app (pgAdmin is a prime example).