I've asked that very question to Daniel Kowalksi, Counselor to the Secretary U.S. Department of the Treasury, and he at the time stated triple net leasing is categorically not allowed. The final regulations seem to open that door though and if there is a continuous and regular payroll supporting the triple leasing activity, that might qualify as a business. Until further guidance is issued, no one I know is willing to take the risk and modify leases to NN or N leases. (https://home.treasury.gov/about/general-information/officials/daniel-kowalski)