v0.1.27 - players will be able to set a 'Minimum Investment Limit' on any buildings they own. This controls the level of investment below which the building will not buy in or produce new stocks. (But it will still pay wages and can still sell items).
For example, you might set the limit to 100s, and invest 300s in your building, it will be able to buy in 200s worth of stocks, after which any more sales to the building will be rejected. So even if someone turned up and sold lots of stuff to your building you'd still have a hundred sheckles in reserve to cover wages.
This should help ensure more stable jobs and wage incomes on many world types.