Band 46 (unlicensed 5200 MHz) usage outside US

The unlicensed 5200 MHz band 46 is being used in the US (T-Mobile, Verizon at least).

The phones using band 46 are mostly for the US market and their European/Global counterparts do not feature this band.
Does anyone know why?

The ISM regulations for unlicensed usage are pretty much the same in the US as in the rest of world (including Europe).
Does anyone know about band 46 usage for 4G/5G in Europe for example?