Ask HN: Why don't charities have web dashboards?

I have a few monthly donations to nonprofits and I got a new credit card. Not a single charity has a web sign-in where I can update my information; they all want me to email them my sensitive info which is not only inconvenient, but insecure.

Does anyone happen to know why this is such a consistent pattern? Is there some kind of legal reason? Is it just some kind of cultural luddism? Is it possible there's an opportunity to build a solution here?