I disagree with the first statement for some industries. My industry has several companies that have amongst the hardest MILP problems in the world that have mi

I disagree with the first statement for some industries. My industry has several companies that have amongst the hardest MILP problems in the world that have millions of variables and constraints and need to be globally optimal for the sake of fairness and to save many millions of dollars per year. Electricity markets are extremely complicated and although it would be amazing to simplify things, the decisions and prices need to be correct. Also, performance is critical as these auctions are running 24/7. They're also always being changed as well, so black-box globally optimal solutions are a need to have.