I think it takes something very special to create a real authentic yeshiva.
There was some really amazing energy in both the Mirrer Yeshiva in NY that he founded and also the first yeshiva I went to in Far Rockaway.
I don't know what it takes to do that but I guess that it is not visible or obvious. I have seen an incredible amount of yeshivas that just don't have that spirit. The Hasidic yeshivas I have seen are cults based on the worship of their leader. Other places are a little better because they are not idol worshipers. But the places were built in order to get the piece of paper that would say they don't need to serve in the Army. Other places are more into money. The Rosh Yeshiva was a grocery store owner that went out of businesses and so decided to open a kollel. In Israel that was simple to do with just three names and ID numbers and you would get an automatic government stipend.
I should mention the reason to put the above paragraphs here come from the Chafetz Chaim, Volume I chapter 4. It is the same reason that you warn you children not to play with a bad kid. You need to watch out to protect him from bad influences.