T-Mobile US is using it for their home internet service. With the global supply chain and chips issues, it's been hard for T-Mobile to get enough of them. It seems likely that at this point Nokia might just be doing enterprise sales because of this. If you can't produce enough of them for a customer like T-Mobile US, why would you try selling one to a single end-user? T-Mobile US won't require support, won't be doing returns because they don't like it, won't need an individual shipment, etc. Given that T-Mobile US can't get the supply of these that they need, I'd guess that Nokia is making as many as they can for corporate customers and they don't want to deal with individuals at the moment.
In fact, their website indicates that they're customizing the device with differing specs for different customers with options like an LCD touchscreen and differing antenna designs.
https://www.nokia.com/networks/products/fastmile-5g-gateways...
In fact, their website indicates that they're customizing the device with differing specs for different customers with options like an LCD touchscreen and differing antenna designs.