Doesn't need to ! That's just the joy of itA lot of land has a cost price of around 10K/acre, is the share farmer going to match that investment ?
NZ you can be a worker then with a % of income / profits and still be an employee Manager
You can build up a few cows in the herd of your own by agreement. You can then SHARE farm. Two separate businesses with different assets and agreed split of labour and inputs. One of the landowners benefits would be land capital appreciation. The land needs farming anyway and the ag profitability and sustainability can be maintained. The value of the land / cost of new land is a reflection of wider issues than the ag capacity of the land