Clearly you did not actually read my posts. The point was a bare 2G GPRS connection has sufficient bandwidth to enable a system to be developed and deliver a good service to the customers. No need for 4G, no need for 3G and no need even for a 2.5G EDGE for that matter.
Notionally yes, but the Vodafone and O2 GPRS on Rannoch Moor is almost permanently unusable - due to a long section of the A82 with no coverage at all to the South, as soon as devices pick up a signal they are trying to get data through, far far more than there is capacity for.
Three provides a reasonable speed - when working but it's not robust enough, the local mast is particularly prone to outages by weather and is regularly overwhelmed when Glencoe is even moderately busy, leading to no service at all.
A point to point wireless link has nowhere to go in a single hop, it would be a minimum of 3 hops to get it terminated on a decent connection and that would need to start from the Summit and without off-grid hops the options are very few. Meall a' Bhuiridh is surrounded by mountains of similar or greater height, blocking direct RF propagation to locations with a fast internet connection.
There is a meeting of local businesses from outlying areas around Glencoe taking place tomorrow, but again the topography is a major obstacle to a community RF based soltuion.