A new hop yard requires three growing seasons before it starts provide a return on investment. A Saison bubble would more that likey result in a hop farmers being stuck with hops that they cannot sell. Saison is not a hop-intensive style of beer.
I planted a new hop yard last fall. I did not plant the yard because I love growing hops. Growing and processing hops by hand is a huge amount of work (which is why I dug up my old hills over a decade ago). I planted the yard in an attempt to avoid having shortages affect my ability to brew.
One fun fact about the hops grown in the Yakima Valley is that the growers can get 50% to 80% full production in the first year. Soil, sun, drip irrigation all are positives. Source was a talk that Matt Brynildson gave at the NHC in 2011, San Diego.