We charge writes ( not for space ) if you paid 100 FLOW to 100 MB then gave it to me, I write 100MB another data, I pay 100 FLOW too. And resource has 200 FLOW now ( in feeVault )
Actually first idea was to put it into tx fees directly ( but that does not allow redeem )
If somehow resource namespace is also implemented ( little off topic ) then writes will be minimal ( when resource doesn’t mutate, just owner change for example ), and fees will be minimal too