It's possible, but there are always competing goals - speed, security, reliability, features, memory usage. When capacity on one is growing quickly (and cheaply

It's possible, but there are always competing goals - speed, security, reliability, features, memory usage. When capacity on one is growing quickly (and cheaply), it's not surprising it doesn't get the same priority as some of the others. In particular, I'm not sure how many extra users you'd get by reducing memory footprint versus adding features.