State Property vs. Free Market: Not easy to jugde, IMHO.
I agree that State Property is a very powerful tool...but it is either limited to special situation (SU- or BE-like expansion) or it requires a lot of preplanning/a high amount of rebuilding infrastructure. You will not get much out of it, if your empire is small or if you don't rely heavily on watermills and workshops.And though you can always plant your tiles with workshops and switch to StPro then, it does not always make sense.Sometimes high industrial capacity is the way to victory, sometimes you need gold.Then cottages and not workshops will do the job.
Free Market is more flexible.Except for pure or nearly AW situations (but then Mercantilism is a good alternative!), you will get always something out of it.Cash is nearly always useful.The important thing is that you don't have to do much for it.Revolt and get the benefits.
I