You are right, most people don't have the engineering time to implement this. Though there is definitely a market for this kind of optimizations in a SaaS solut

You are right, most people don't have the engineering time to implement this. Though there is definitely a market for this kind of optimizations in a SaaS solution (I know that because it has something to do with my job)... Now, implementation of this by browsers is going to take a long time, and then we will see incompatibilities trickle down all the way, with Safari taking a few years after everybody else has it and IE/Edge also taking forever.... I should rather work in a farm and harvest tomatoes...