In my Pacificon talk I pointed out that the 3300 MHz band is almost never used, and the possible auction valuation to commercial users is very high. If we presume a $2 per MHz-POP auction price (which is about what the AWS-3 commercial carrier spectrum went for) and a US population of 320 million, the value of the 3300 MHz band is $128 billion. The AWS-3 auction, record-setting though it was, only raised $47 billion. For a government $19 trillion in debt, $128 billion isn't much but it's a start. Google could afford to buy that spectrum, and with the unprecedented access it enjoys due to the revolving door between itself and the White House, it has the political clout to make this happen.
There are just over 800,000 licensed amateur operators in the USA. $128 billion puts the value of our 3300 MHz band at $160,000 PER OPERATOR. For something we never use. I'd be willing to say (and I'm being very charitable in this estimation) that 0.1% of all US operators make use of the 3300 MHz band. That's $160 MILLION PER ACTIVE OPERATOR.
I'm not saying what Google's doing is right. If you think it's wrong, file comments with the FCC. I'm saying what they're doing is not surprising, and that I predicted this would happen six years ago.