I bought my kid $15 worth of Roblox credit as a treat last week for good behaviour. I asked her yesterday how much credit she had left, she said she spent it all and would like some more. All her friends play it, and likewise are pestering their parents for Roblox credit. It looks a great business model and it's going to continue growing for awhile yet.
Looing at valuation, Microsoft paid $2b for Minecraft, but that seems to have a different business model. It seems to be more a one-off purchase (I bought my key for it off Ebay for $2). Whereas Roblox on the other hand is free, but makes a lot more on the in-app purchases. Roblox is still very much in its infancy in terms of revenue generation. I can see them getting into licencing, merchandising, and who knows what else. I have yet to see it making the same sort of penetration like Minecraft has done on that front yet.
The valuation is racy, but I can see how Roblox can grow into it, certainly a lot more so than the likes of DoorDash or Uber for example. Also, in terms of valuation, $30b is nothing in the grand scheme of things. I can see the likes of Facebook or Google being very interested in this company, it's target market is 6-12 year olds, and these are EXACTLY the types of people you want to be integrating into your eco-system.
So yea, all in all, I think I would buy this at $30b, but my guess is that the day this IPO's, it will probably open up at like 50% up.