"Leaving" sounds like a choice, there are lots of considerations. We don't know how the roadshow went, so we don't know what people were saying about participating at different prices. We also don't know what constraints they had on dilution from previous term sheets.

Personally I'm glad to see a "Unicorn" step out of the corral and survive in the wild. If it is still above a $B valuation after the employee lockup period ends that will definitely classified as a success.