Digital Wills initial thoughts

I think there is a large market opportunity to build "digital wills" that control access to our digital assets. 

I imagine you sign up, connect a host of different services/accounts, authorize different individuals with different points of access and then your will is generated stored securely. 

All information edited about the will can be seen in a log so you know where things change. 

I do not currently know nearly enough about the will industry but I am thinking of looking more into it.

A few initial questions I have:

- What % of people actually make a will? At what age do most people do it on average? What is average income of people who make a will? Does it cost money to make a will?

This is obviously an unattractive industry for many people as wills are not the most fun topic to think about.

But regardless, I see this as an inevitability.