This just isn't how the grid works. Texas has added more than double the amount of renewable energy than any other state grid in the last two years. These investments introduce variable production and require on-demand response to keep the demand/consumption balance steady. Normal / residential consumers do not have a steady demand, don't prepay power usage, and don't guarantee future power usage. All of these factors are what make industrial demand response valuable and necessary for the modernizing, increasingly-renewable based, power grid. ERCOT isn't perfect, I think there are areas for vast improvement, but I think your comment is a little uninformed as to how the grid currently works and will be working in the future as we increase renewable production.