They don't have windcatchers or motionless rooftop wind energy turbines.
And they aren't angled to optimize thermal flow through the facility.
What are some examples of passive rooflines?
The shed roof is an example of a passive roofline; which angles up towards one side and causes passive thermal exchange. FWIU you can just open and close vents at the peak of the roof according to time of day, internal and external temp and humidity, and the weather forecats
Passive cooling > Modulation and heat dissipation techniques: https://en.wikipedia.org/wiki/Passive_cooling#Modulation_and...
/? Passive roofline: https://www.youtube.com/results?sp=mAEA&search_query=Passive...
There's probably some reason that there aren't data centers with angled roofs other than that there's typically HVAC equipment up there?
More surface area at the top of the structure should make for greater passive thermal exchange; though a more focused extreme thermal gradient is probably most useful for thermal energy reclamation with arrays of solid-state thermoelectric heat engines?