I guess to be fair, the solicitors do what is likely for them drudgery and keeping everything 'standard' probably makes their life easy.
We had 2 accountants, one supposedly a motel specialist, one a partner in a big accounting multinational, look at the books and both failed to find that the vendor had hidden outside income into the motels books. Hence, based on their advice we ended up paying too much for the lease.
Of course now, with nearly 10 years experience, we would find this discrepancy ourselves but, being new to the game at the time, we took advice which proved to be incorrect.