How long does Class A have?


Hi Guys/Gals
 I have a Sugden A21SE which is a Pure Class A single ended design, I absolutely love this musical amplifier with its strangely plentiful 30wpc, it runs hots as they do, I always enjoy watching the faces of my uninitiated friends when they touch it after I mention they get hot, lol.
But in this modern green era I wonder just how long do Class A amplifiers have before Greta Thunberg gets wind of this inefficient method of creating sound and pisses on the parade?

Thoughts?
mrmeaner
I hear you, and obviously the vacuum cleaner market is larger, and I’m not sure of your whereabouts but in the EU we had the power of vacuums, lightbulbs etc targeted quite tightly, I just think someone will come along and pick on them, I hope not mind. 
When it comes, and it likely will come, it will come in the form of a consumption tax on electricity. A sin tax if you will. Or maybe a luxury item consumption tax (similar to a gas-guzzler tax). Just a matter of time.
I have solar panels that cover 72% of our family use and I buy energy credits to make up the rest.

Until we get out of gas cars and flying all over the place, Class A amps is a drop in the ocean. 

They sound great. They will continue to be made, sold, and enjoyed. My two cents.