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Look up "HVDC data center". In that context, 380V is a common system voltage. It's very unlike the hundreds of kV HVDC transmission lines.
If the AC to DC conversion is done in one place, that would be where to put any required PFC stuff. There are also "wild frequency" AC sources like windmills, which are usually converted to DC for use.
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But we're not talking about it in specific end-user industry. Data centre would be so called medium voltage customer with customer owned distribution equipment.
Purpose specific centralized DC electrification is nothing new or novel. It's been around and been done since the second industrial revolution for electrolytic processes and railway traction power.
Edison system was in use and remained in use until fairly recently in Manhattan, but Westinghouse system dominated. Now, looking to take a step back, we must make the decision. While they pulled the plug on DC, they're still in use and newly deployed all the time for light rail systems all over the world.
But the real question is... how do we make direct current electrification power from 3phase alternating current electrification?
this?
or the modern motor-generator back to back power conversion technology known as the MG set?
There's also a commutatable static rectification and inversion technology known as the mercury arc valve
