For example, my business model might be to ask you for your login and password information for your bank so that I can help myself to the contents of your bank account. In return I'll send you a newsletter on how to get rich quick :-)
I doubt you are asking seriously, but in case you are, the distinction is: if I need the information to complete the contract, then it is under contract basis and I'm allowed to use it for that purpose. If it's not needed for completing the contract, but I have a legitimate reason for using the data anyway (kind of vague, but includes marketing -- basically all the stuff that was legal before GDPR) I can do so, but I need to tell you I'm doing it. You can object and then I have to stop. If I have no legitimate reason for using the data, but I want to anyway, I can still do it. I need to ask for your consent (which has to be opt in). My service can't depend on you opting in (because I have no legitimate reason for needing the data). I can't deny service just because you opt out. You can also withdraw your consent at any time.
So in my silly example at the top, I could literally ask for consent to use your login details for you bank. If you agreed, I could use them. However, since I have no legitimate interest in your bank login details (other than I wanna look at your bank balance), I can't make my service depend on that.
If your business model is based on making money from data that you have no legitimate interest in and you have no consent for... well, I really, truly have no sympathy at all. I understand that some people may have a different opinion, but I don't think mine is really that unreasonable.
For example, my business model might be to ask you for your login and password information for your bank so that I can help myself to the contents of your bank account. In return I'll send you a newsletter on how to get rich quick :-)
I doubt you are asking seriously, but in case you are, the distinction is: if I need the information to complete the contract, then it is under contract basis and I'm allowed to use it for that purpose. If it's not needed for completing the contract, but I have a legitimate reason for using the data anyway (kind of vague, but includes marketing -- basically all the stuff that was legal before GDPR) I can do so, but I need to tell you I'm doing it. You can object and then I have to stop. If I have no legitimate reason for using the data, but I want to anyway, I can still do it. I need to ask for your consent (which has to be opt in). My service can't depend on you opting in (because I have no legitimate reason for needing the data). I can't deny service just because you opt out. You can also withdraw your consent at any time.
So in my silly example at the top, I could literally ask for consent to use your login details for you bank. If you agreed, I could use them. However, since I have no legitimate interest in your bank login details (other than I wanna look at your bank balance), I can't make my service depend on that.
If your business model is based on making money from data that you have no legitimate interest in and you have no consent for... well, I really, truly have no sympathy at all. I understand that some people may have a different opinion, but I don't think mine is really that unreasonable.