"The tragedy of history is that revival comes and goes, and subsequent generations build monuments around the achievements of the previous generations, but do not completely receive and occupy their inherited spiritual territory. 

Perhaps they don't want to pay the same price their forefathers paid, or perhaps they end up forming organizations around past movements to preserve and defend the idea but not the practice of revival.
 
They inherit territory for free, but do not pay the price to develop it, and so they lose it. You see, it's  possible to live in inherited territory for a time without advancing that territory. But if we want to hold onto that territory, we must expand it, and to expand it we will have to pay a price." - Bill Johnson (see the parable of the talents given to each servant - Luke 19)