Monetization possibilities with PPL
Well, there is no problem in thinking about monetization possibilities using PPL, as long as appropriate considerations are given to the respective policies and regulatory aspects. So conduct a good due diligence in this regard and if unsure, contact the authoritative body that issued you your license.
And, if you end up conducting such an activity (hopefully, with the appropriate authorization in place), make sure you have the required insurance.
Good luck
WP