My wealth is not riches of currency it is the knowledge that tells me that the longer it takes to build a functional transit system capable of providing a fundamental essential means and way for the population to expand upon urban survival meaningfully the expense will rise to the point where it will be beyond the scope of the future generations to absorb. 
Estimating the cost 10 years ago the factors have risen tremendously. 
10 years from now the same will happen. 
Everyone not just a few are going to pay for this project as there is federal funding in place.
There is no disproportionate share.
If complaining about $30 more a year in the amount of sales tax an individual full time resident must pay for this project to get completed only for it to be cost penalized by the contractors shows that delays will only escalate the cost.

Providing an alternative method of transportation that enhances the economic outlook while reducing pollution is the main purpose of electric rail transit