It would make zero sense for HoloLens today. The HoloLens doesn't even have a GPS chip. But Microsoft is building the future of MR in general. It's a space they want to own or at least lead, and their investment in Azure services for HoloLens today are proof of that. Obviously what I've described does not really favour industrial use (though I dispute the idea that this would not be achievable in industrial/enterprise environments.)

Indeed, HoloLens isn't great outdoors, however the current technology is capable of it (despite the HL design.) The visor can be darkened to function more like sunglasses, which solves the contrast problem.

I'm just looking 5-10 years out, in terms of what's going to be needed.

It doesn't make sense to develop for 5-10 years out; you need to build for today and sell for today. If that means running apps, then you run apps. When the need arises, it will be built.

Evolving technology from an existing place is generally more successful than trying to invent the end goal at the start.

This was surprisingly insightful.

The core idea could also work on intranet scale, inside the corporate firewall.

Information tends to end up in different systems. You have for example something responsible for the IoT tracking data of machinery, something else for the HVAC and maybe another system for the maintenance manuals. The proposed system could pull this information together, collecting from different systems based on location (and access rights) within the facility.

Outside the facilities, it might be good to combine information from electricity, water, telco companies when you are at the construction site. Think for example excavator operator having augmented reality view of all the pipes and cables in the ground. This kind of information might be already available via the web if you have suitable access rights. Something similar could be applied here.