I agree with OP that we will continue to see improvements, but there are also some serious bottlenecks ahead of us:

- Energy is not infinite, neither energy efficiency is. - Datacentres neither. - Benchmarks are an abstraction of real world problems!

On top, there is an overall "economic" aspect that most of the people miss: every change carries a certain degree of risk (lose money, reputation, customers, death of people, ecc) that very few want to take and a lot of changes(e.g. rewrite some piece of SW in another Lang) don't produce a positive economic impact.