This idea is also called "build it and they will come." History has shown that for theme parks, it doesn't work.
Exhibit 1: Six Flags in the Kieran Burke era---they ran several parks into the ground (they were the beginning of the end of Worlds of Adventure, and almost killed Magic Mountain) by overbuilding attractions in the hope it would drive attendance. Now that Shapiro is CEO, Six Flags has grown much more carefully and prudently, focusing instead on improving service and the in-park experience, and it is working. Attendance is up, and this is expected to be their first cash-flow-positive year. Ever. In the entire history of the company.
Exhibit 2: Hard Rock Park in Myrtle Beach. This is a park much closer to IOA or a Disney park than is your typical Six Flags. In other words, they did it right. A very immersive experience, not just a collection of rides. But, they built a big-a**'d park out of nothing, and their business plan expected 3M guests in the first year. I think they might have gotten half that. They just filed Chapter 11.