voting
The current route has been modified a bunch to appease local municipalities that want, or don't want, part of the tracks or a stop near them. Maybe that can be stopped by voting, but the wealthy individuals will continue to sue and force more expensive litigative battles like the one that resulted in this environmental assessment needing to be cleared
So while the last step in the sequence of events is wealthy people suing, the actual problem here is probably that the CHSR may be illegal to construct and there are people with an interest in testing that theory.
OK, so do you have a solution to that?
I said "not much chance" rather than "no chance." Eventually, some watered-down version of a law like that might pass.
I think the main thing that has been slowing things down is severe lack of funding, both from the state of California, and especially from the federal government. This is probably due to the fact that there was a lack of experience (both from the rail authority and especially from the legislator). Thankfully it looks like they have stopped withholding funds and at this point they have gained some experience. I doubt there will be another doubling of cost estimate nor much more delays (perhaps a year or two more at most).
No, it's funding.
The switch to exclusive focus on environmental clearance outside of a particular area of focus was based on funding, not lawsuits. HSR has always relied on massive additional funding besides it's dedicated bond fund, much of which was expected from the federal government, and which has not materialized.
It is not even 4 years since Gavin Newsom ordered the stop on any new construction packages (which ironically made this a train from nowhere to nowhere) because there simply wasn’t enough funding to finish anything that hadn’t already started. Thankfully it looks like this era is over now, and we can finally start seeing things get the funding it needs and deserves.