Why are individuals limited to 4TB?

Hey All,

I've seen many posts here asking for a way to add more storage to individual plan. Right now, after hitting the 4TB limit, the only way to get more space is to buy a 3-user plan, effectively tripling the cost you're paying per TB of storage space. I have been trying to figure out why this is for years. Before I leave Dropbox entirely, I wanted to see if anyone has any idea why this policy is this way? It'd be great to hear anything from Dropbox (other then "we'll pass it along"). 

Possible reasons:

- They have a moralistic view that if you have more then 4TB of data, you need a teammate. 

- They just want to arbitrarily triple the price / TB. 

- They believe their product is "More then just storage", which it is - and which they're using to make more money off "collaboration tools" that have low front end cost and high profit margins. In doing so they're forgetting to also be "just storage", which is what we all signed up for in the first place. 

 - Some other profit driven reason I can't think of. 

- Sometime to do with security and not wanting to do too much web hosting. 

I'd love any insight on this from DB or anyone else. 
Until then, I'm open to suggestions for alternative tools that have some collaboration features, but don't limit your data to 4TB. 

Thanks!