This is the most dumbtarded logic I've ever seen.
Nobody is asking for a business address/names/SSN/birth certificates.
We want simple pics of their farm and a mining address.
There are several cloudmining operations that have no problem problem providing this simple proof.
For example look at cointerra, a US company, which anyone can verify owns ~9PH via the blockchain: http://mempool.info/pools
Other cloudmining companies that don't hide their hashing power include: KNC, hashnest (antpool), cloudmining, and cex.io.
Theres no reason to hide it unless it's a ponzi.
But pbmining is free to ignore 50% of their potential customers and continue spending tons of money on advertising to make up for that loss.
Btw even if you believe pbmining is legit you should still be demanding they prove it to the skeptics because the more customers pbmining has, the bigger economies of scale which means lower $/gh for everyone.