The problem is, why would a business, interested in making maximum profit, build a power infrastructure to support worst case situation? 99.99% of the time they would have over capacity.
If the consumer is allowed to select their electric provider they will choice the lowest cost source which will be the one that does not pay for the capability to support these situations.
Good point why would the people of Texas want to pay the surge costs of getting a reliable grid for that 0.001% of the time?
If power is that important to any particular business(and/or individual) they can just as easily invest in their own backup capacity.