Some programmers will write more efficient code. At my $dayjob (one of the big tech companies) we're already planning a major goal next year of optimizing server code to reduce RAM requirements, and this is directly in response to the crunch.
In practice I expect most optimizations will come from "stop doing stupid stuff" and not "use fancy advanced algorithms." But that's a cynical perspective so don't be cynical like me.
In practice I expect most optimizations will come from "stop doing stupid stuff" and not "use fancy advanced algorithms." But that's a cynical perspective so don't be cynical like me.