When solar becomes cheaper than the alternatives, the propaganda machine can only slow the adoption, not stop it. The entities that consume large quantities of electricity are mostly unaffected by IQ lowering media transmissions.
You don't really need to reach for "propaganda" as an explanation as to why people have not been in a big rush to buy more expensive (both up front and ongoing) and less reliable electricity, and when and if that ever changes it won't be "despite the mighty power of progaganda", it'll be because it's cheaper and better.