Let's assume a piece of data is used to empty someone's bank accounts via social engineering. Now it's possible to calculate how much that'll cost the banks. Multiply that by the average worth of an Equifax "customer" and you'll arrive at a nice round number which should put them out of business.
Sure they can. Ask Equifax’s lawyers how much it would take for them introduce their SSNs and credit reports into the record. Divide by the number of attorneys and multiply by 145 million people affected.