The bolded part is true. Seems unlikely that the Big Ten could get enough yes votes to add any more Pac schools in the near future. Washington and Oregon can showcase themselves all they want, but when a Big Ten power player like Ohio State isn't interested in further expansion and was reluctant about USC and UCLA, it isn't happening any time soon.
From the hinter lands of Ohio.
I can tell you that part of above is not correct. The Ohio State President is in favor of expansion (but she is on the way out - did something the Board of Regents asked for her resignation for something (nobody is talking)). Gene Smith (AD at Ohio State) is against expansion BUT I believe he is trying to protect Ohio State's interest since he has to balance their sport's budget. On top of that, Michigan has a new President, Purdue has a change in President (guy from inside - may give some stability). Know Northwestern has a new President (from Oregon) and I believe there has been changes at Wisconsin. All of this has more influence on whether the Big Ten expands. Believe these Presidents have more on their plate to deal with in their own institutions vs what the Big Ten is doing.
One other factor to consider, is that AD's do not have a vote on expansion. May have influence at their own institutions BUT when the President of the university says do it - they do it. This was the major reason Bo Schembechler resigned as AD at Michigan when Penn State was added.
Also, each school has one vote. Indiana is equal to Michigan. Do they listen to what Michigan, Ohio State and other say - yes. But they want the input from all institutions. They try to reach consensus in their meetings before going public.
I do BELIEVE (what I think is going on), the Big Ten going back to Delaney, they (Delaney & Presidents) came up with a long term plan of where they want the Big Ten to be and go. It is just a matter of time and execution. I do believe they don't want to DESTROY conferences in the process.
When you look at the Big Ten and see how all of them except Nebraska (was) is AAU. That should tell you where they are headed. Just look at the difference in Research Revenue at Ohio State $1.2 B vs Sports Revenue just a little over $200 M, where is the real money? I have said before, I believe Cal Berkley & Stanford end up in the Big Ten IF they want to. Just a matter of time and execution.