I have never understood their 50+10 GB storage as the starting plan. Anyone storing a lot of emails, please don't come at me screaming, but know that not everyone keeps every email and every attachment ever received right there in that email account (especially the attachments). For me, email is just communication i.e timed information, not data storage, except for very personal emails, and very very rare, some non-personal important emails. So some people do like to simply delete the emails they no longer need. Also their pricing almost feels like "unlimited storage" backup solutions mass pricing strategy.

You mean why isn’t there a cheaper tier than $5/mo? Not much to be gained by offering it, I would think.