I have been predicting the return of gasoline engines to the small/mid sized tractor market for several years.
The federales have seriously damaged the light truck diesel market as well as the farm tractor market with nonsensical regulations and will continue to do so.
Presently, the opportunity exists for application of modern gasoline powered engines to small and mid sized agricultural applications.
Sadly, any such innovation will not be done in the US and may not be done for the US market because the investment into design and development of such machines can be rendered valueless overnight by an unelected, cube-dwelling bureaucrat in DC.
Of course, should gasoline powered farm tractors become a trend, relentless federales will quickly regulate such into obscurity.