If he (and by extension thousands more) pay tax, then there's no "get away" involved – the transaction has been done fairly and the Govt. got the requisite amou

If he (and by extension thousands more) pay tax, then there's no "get away" involved – the transaction has been done fairly and the Govt. got the requisite amount of tax. The point is, if he has been doing this for 10 years and has a massive stack of cash which he tries to deposit now, that is going to bring him to the attention of the Income Tax authorities.