A while back, I attempted building a startup around consumer data sharing.
But I found it was beyond my capacity and I considered it as a failure (followed the rule: fail fast!).
However, I had learned a few things from the failed attempt.
Make it easy for users to share their consented data with businesses so that users get personalized and better experience/value/offer/services from companies.
Imagine an user needs a Car insurance. The user store their Car/Driving license history on our platform.

Next s/he wants to get a car insurance, instead of presenting a long form, the insurance company will get the required information from our platform with the user’s approval (kind of like google or Facebook login). The user doesn’t have to fill in the same info at 50 different sites. Also, user have a better control over their data.

Not only insurance, this could apply to many other segments (Healthtech, Fintech, etc.) whoever provide personalized products or services.
Essentially this platform idea was kind of a marketplace but for data. As like every marketplace, the main problem was chicken-or-egg first. Also, this was an idea that deals with PII (and PIA), PCI-DSS and HIPAA/PHIPA in some cases. There are quite a few regulatory compliance requirements that would need heavy investment.
I have interviewed over 50 potential users and 9 businesses. Here is the summary of what I had discovered from my research.
Our pitch to users were mainly around convenience, quicker error-free, most personalized and in some cases cheaper deals/outcomes.
Our pitch to the businesses were around getting accurate/fresh data from users and be able to provide most appropriate(personalized) offer that had the highest chance for conversion/retaining. Overall a much better experience to customers.
Personally, I concluded with: getting users might not be too tough (higher CAC) but had a potential for a larger LTV. However, having the businesses adopt the platform would be the real challenge. There was also a significant effort required to keep them compliant to our platform and overall industry standards.
I had the whole working MVP almost ready. The OpenID Connect server development and putting it behind AWS ALB was quite tricky to get it right for security reasons. Anyway, I had to kind of throw most of it out (well, I repurposed quite a bit later on). But, please re-think about building your MVP before you have a pool of potential committed customers! 😊
Funny thing is, I have seen a few companies make similar platforms later on. And they’re all from very well-known brands. So I guess they are those “bigger” companies that people “trust”!
Thank you for sticking with me so far and hope this insanely long read is someway informative to you.
Cheers!