The writing is on the wall, period, it's just a matter of time. As renewable usage increases, industrial and power grid use of natural gas is going to decrease. Period. That's the whole point. The reason natural gas is so cheap is that we use so much of it; when that starts to change, it'll be prohibitively expensive for restaurants to cook with it. It might get replaced with something other than electric, but fossil-derived natural gas is going away, and cooking is no exception.