I'm not surprised Thunderbird is breaking off considering how much the Web-only approach to just about every service is in full effect. How do you serve up ads

I'm not surprised Thunderbird is breaking off considering how much the Web-only approach to just about every service is in full effect. How do you serve up ads in an email client without pissing everyone off? Obviously you can't do it so Thunderbird has to go! Also, for most people the email address they have isn't for legitimate correspondence considering how many people use Snap Chat, FB Messenger, WeChat, and the like to keep in contact with people. Why bother making an email client even it's available in the app store (phone) when folks will sooner install an IM app? It's not to say email, conceptually as a form of communication, has no uses. It's just that email as it stands today sorely needs refactoring to include everything from IMs (multimedia based or just pure text) to long form correspondence with varying degrees of confidentiality (encryption) and possibly including some form of file-sharing linking (not so much directly tied into the client/server protocols). I'm not sure the current email server and client protocols can handle such a refactoring without breaking backwards compatibility (therefore pissing off everyone who is still using email). Some email clients do some of the things I'm already suggesting. Some of them do it very well, but honestly am I off the mark on this line of thought? I have to think possibly I am, but I'll leave it to you all to consider.