You're looking at a capital outlay of around 20 grand for that kind of gear and years of training in HDD repair.
True .... it can be done, but why on earth would somebody go to all the trouble for a criminal enterprise ?
There's tons more money to be made in legitimate data recovery and no risk of prosecution.
Like was stated earlier, especially for a regular Joe Blow's hard drive. Now if it belonged to Nasa or our military, hospital etc. then it would be a little stricter policy.