I don't think that would be the case. Sporting estates were always a loss making enterprise, a fashion set by Victoria & Albert and aped by others, who built lodges at enormous expense in very remote locations. Nowadays they are largely owned by a company set-up, and the costs offset against tax, or supported by agriculture & forestry.
There was generally cottages going spare for retired folk etc', so doing their patriotic duty and keeping a roof over an absent keepers family would be neither here nor there financially and ensured that the property was kept fired. How things panned out at the end of the conflict was another matter. The glory days for keepers, their cottages and the "Big Hoose", were well and truly over, as country war memorials sadly confirm.
Skoosh.