Allow a personal account to have more than 3 TB, or more than 4 TB with the add on

Thanks for pointing out that you can now add another TB to the Essentials plan for a total of 4TB.  I've never noticed this before -- they don't seem interested in promoting it.

I think that since it's unrealistic to wait for Dropbox to *ever* change their single-user licenses, the solution is to jump from 4TB to 9TB via their Business Plan and register two unused emails as the second two "accounts," and just use the entire 9TB in your primary account.  The cost/TB ($60/mo for 9TB) is similar to the personal plan.  Right?

If you need more you can jump to the 15TB Business Plus plan for $78/mo -- which is lower cost/TB than the personal or regular Business plan.  Again you'll just need to set up two fake users that don't use any of the storage -- just use it all yourself.

What am I missing?  Is this not a viable course of action (unless you want more than 4TB but less than 9TB)?  The cost/TB on all of these options is comparable if not identical.