All of that is incorrect.
H100 rental prices are still as high as when the cards were brand new. The prices vastly exceed the power costs.
In a world where power or DC permits are the current bottleneck those H100s would be getting retired in favor of Blackwells. But they aren't. They are instead being locked in for years long contracts.
Why exactly would the H100s get retired for Blackwells if specifically power and DC permits were the bottleneck?