As these things go, the plan was eroded over time, with the (in)famous Proposition 13 of 1978 dealing a big blow.
[1] https://en.wikipedia.org/wiki/California_Master_Plan_for_Hig...
Looks like it was about 38b https://lao.ca.gov/Publications/Report/4432
That link also has the allocations for that 38b. You can get 5Gb fiber in my neighborhood now. Some of that is probably due to this budget for instance.