John Macleod was my uncle. The sale was to fund massive repairs to Dunvegan Castle (which was a semi ruin). He didn't sell in the end and Hugh his son managed to get partial funding from Historic Scotland etc.

I don't know if this applies to Blencathra because land law is different south of the border but owning mountains like these in Scotland is a mainly expense. There is the right to roam so anyone can walk there (thankfully). It is an area of outstanding natural beauty and can't be built on or developed (thankfully). But the owner has a responsibility to maintain paths, fences (thankfully).

There is a little income from sheep grazing on the lower slopes and some camping.
BUT, you can point at them and say: "I own them"!