My eye!
It has not caught on in the U.S. because the voters have a marginally louder voice that the bureaucrats, and they can do simple arithmetic...a skill with which you seem unfamiliar.
Most of your figures and factoids are false. Germany's so-called success with solar is entirely due to the incessant whining of their green party, wielding the club of coalition-breaking over the government, threatening far more important agreements than energy policy. Further, you blithely ignore the carbon footprint of solar and wind power technology manufacture, which far exceeds that of any conventional power plant, per watt of output. Then, too, no wind turbine or solar installation can provide power for a fraction as long as conventional power plants, without repair/replacement costs that nearly equal the original investment. I suspect your prior and, evidently, present involvement in the solar industry introduces an insurmountable bias on your part, and negatively affects your comfort level with taking others' hard-earned money to subsidize your solar hobby. FiT makes about as much sense as the more onerous provisions of Obamacare. What's next, a breathe-in tax?