That's a really good point I hadn't considered...with production costs easily breaking $100m, lots of the bigger fundraising news doesn't even reach this. Color for example raised ~$40m, which in movie terms isn't even a small romantic comedy. The Lord of the Rings trilogy had a budget of $281 million and in many ways was a big of a gamble as any Venture Backed Company.
I'd imagine that the methods to raise that kind of budget aren't all that dissimilar in truth.