Well, you perhaps should adjust your expectations and learn that natural disasters and infrastructure are very different in different parts of the world, and even within particular countries. It is odd that frequent travelers seem not to recognize that a power outage at a single property in Bangkok may be different than a tornado wiping out a large part of the power grid in Texas, while making ludicrous comparisons of cost. It seems unlikely that your unspecified hotels generators could sustain running the entire hotel for two days, which is fine because the issues with power outages there usually call for short term backup supply. Wifi of course is meaningless when a tornado has ripped out the connection, US guests are more likely to have data plans, and a suburban Texas Residence Inn is far less likely to have a need for "lifts."

If your response is every hotel in America should have a backup generator that would last several days, I can assure you that would cost far more than it cost your $30 a night hotel in Southeast Asia to do that.