It's not about the environment, it's about the financing. Who's going to put up the money to build the most complicated machines humanity has ever dreamed up, each one a many-years-long construction project very likely to have schedule slippages and cost overruns, when they could get more megawatts for the dollar building easy, reliable, low-maintenance solar parks which start generating revenue within a year?
Some governments will, sure, and perhaps a handful of large, wealthy cities in high latitudes or on small islands, but in general it's difficult to see why an investor would choose to invest in a fusion plant.