All property cards are doled out at the beginning. They represent
Every turn you gain 100 dollars in revenue.
For every property you have, every turn you lose x dollars in labor
costs to all other players.
x = percent of properties your opponents hold, e.g. if you control
10/40 properties, you lose 75 dollars per turn.
If you have all properties of a single color, you have monopsony over
one local industry. You can drop the labor costs now. Those properties
no longer count for anyone when tallying x.
At beginning of each turn, each player must put one property up for
auction. Everyone, including the person auctioning the property, may bid.
First person to control all the jobs wins.