(i wasn't sure if this belonged in questions & support/get feedback since it wasn't specifically related to itch.io or a concrete product, but apologies in advance if this is also not the right spot!) 

as the title says, i've been dabbling with making game assets that i release in early access on my subscription services  (presently patreon & kofi).  i plan to eventually release them on itch.io in packs, but thought i'd offer them in a slow trickle for a monthly subscription as well.

some potential problems have been coming to mind though, so i wanted to see if anyone had any thoughts/advice.

what would be the ideal way to prevent "dine & dash" situations?  
(they subscribe, download everything & then unsubscribe without actually paying anything) 
i feel like this is an age-old subscription service problem in general, so there might be something obvious i'm missing.  (does patreon charge new patrons immediately these days?  my memory fails me, but i suppose that would be one way around it.)

other than that, i'm open to any general advice for running a subscription that includes game assets.  most of my current patrons subscribed for other elements of the service (sketches, commission discounts, etc) & haven't given me much feedback on these lol