Congrats on the sale!
You could argue that "Zillow is going about this all wrong" if their goal was trying to improve the process of buying and selling homes or if they were trying to make it more affordable to buy a home. What you have to realize is that they have a business that's working very well within the real estate status quo: agents pay them money for ads to get leads, agents who are able to convert leads make a ton from commission, the cycle continues. A public company with an established business model (that prints money!) is not going to pivot and suddenly compete with their well-paying customers.
However, I totally agree that there's a huge opportunity to improve the buying/selling experience and lower transaction costs. My team is working extremely hard on that problem.
Edit: I should note that Zillow has done tremendous work on improving the home shopping process and I'm definitely not trying to knock them on that. They and their competitors have brought the shopping process online and given consumers access to listing info that was previously only available to agents. The actual offer/transaction (the buy button) is the extremely complicated piece we're trying to tackle. It just so happens that in tackling that piece and becoming a brokerage, we get access to a high quality broker-only data feed.