its all about money. When the sponsors never showed up, the open wheel guys got kicked to the curb. You want open wheel guys back at indy there are only 2 options. #1 set the rules up to where an open wheel team can build or maintian there own car. #2 drivers have to get sponsors. With the change in mentality, I'm not sure if any car owners would rush out to get a car. #2 is never going to happen, because drivers tend to get just enough sponsorship, or they fall into a big deal for a year or 2 then it goes away. Honestly, when this new car comes out, if it were to cut the cost in half, I still don't see any open wheel teams making the venture.