Same thing happened when LED lighting became popular. I had this one friend that spent a fortune on Incandescent par 64 lights, connectors and controllers. I tried to stop him and offered him to come to our warehouse and compare his lights to our LED par 64 cans. He said "no way was he going to want or use that fake lighting, that it was impossible that LED was better or brighter than his 500 watt bulbs. Well every club, he tried to use them at, blew breakers. And because they created so much heat on stage, the only way he could use them was to dim them or use 2 to 4 lights.
About a month goes by and he shows up at one of my shows and sees the stage all lit up. He comes up to me, seeing 3 quad par 64 trees, as close as 4 feet from the performers, and super bright lighted stage, pumping out different colors, and admitted he was wrong.
Funny thing is, being a die hard tuber, when I first heard of the Fractal Audio AXE FX line, I thought "No way is this going to sound good ever".
Even after reading all the great reviews, I didn't take a chance until The AXE FXII XL+. I now have the III, and the tube amps I have left are collecting dust.