Earlier quoted context omitted.
wait, you need to pay to be able to use a yubi key for two factor?
We don't have support for this yet. Would you say you think this should be a free feature?
If 2fa is the only way you can differentiate in order to force enterprises to pay, it’s better to have a fee for security than to die because you can’t make money… but broadly, as a security company, you should aim for maximum security for every user.
If I were in your position, I’d start out by making security features available to everyone and then only if you feel you don’t have a choice would you put them behind a paywall — and at that point, you can grandfather existing customers in to these features for free.