It's not true, we have a plenty of constraints: memory, cpu, battery consumption, latency, etc. We also have complexity constraints, i.e. how qualified our team

It's not true, we have a plenty of constraints: memory, cpu, battery consumption, latency, etc. We also have complexity constraints, i.e. how qualified our teams, which technologies, they know, etc. IMO, many combinations are just impossible, just like in mechanical engineering, and even worse, complexity is often much higher.