They'll only arrest people with assets. If they have to spend thousands of dollars prosecuting and jailing you, they want their costs covered by your property forfeiture.

For example, the DEA of the 1990's wouldn't bother busting cannabis operations with less than 300 plants. The cost doesn't justify the return.

This means if you rent, and don't have some large, non-secret, holdings, you won't be on their radar.