Is there a unique distinguishing competitive advantage that makes Blue Bottle Coffee so attractive?
The key to understanding the valuations used for Venture Capital investment is that the risks are offset by liquidation preferences. A $10 million investment for 10% equity with a 1x preference in a company with $18 million in assets is not as risky as the headline grabbing $100 million valuation might make us believe.
Pinkberry was just frozen yogurt, right?
What makes Shake Shack special, such that it inspired a craze in NYC? What differentiates it from the 37 other semi-premium burger joints that have boomed in the last decade, like Five Guys.
Here's the answer: they're not all that special. They're providing a quality service, and people get bored of the same-old same-old Starbucks & Co. or typical fast-food burger (even the nicer ones).
These are massive physical industries. The physical services world doesn't lend itself to the easy monopolization that you see in software / Internet. Meaning, there is a lot of space for other competitors. Starbucks owns 25%-30% of their segment depending on which metrics you use, after all of these years and their vast success. Dunkin has another ~15% or so. I'd say 60% of the market is available to be fought over (much like in burgers, start-ups can absolutely steal back share from Starbucks).
Companies like Shake Shack, Blue Bottle, Pinkberry, and a zillion others, also play to the human desire to find new, trendy things to experience; the desire to not do what everyone else is doing; to seek out a different culture, or simply a slightly different tasting cup of coffee. That desire is perpetual, it will never cease, and that will also constantly break down dominant players over time (eg: McDonald's is rotting).
I think that, in addition to what others have said, Blue Bottle has pretty big plans for itself. Aside from SF, BB runs cafes in NYC and now Tokyo. They've acquired an LA based coffee shop and now also have LA shops, Tonx Coffee and now do mail order subscriptions. Those two were maybe a year ago? Recently they acquired / merged with Tartine Bakery which is also a lovely SF establishment.
So, I don't know why, but I've got to assume someone giving them money knows something. ;)
It's still a relatively boutique operation and the merger with Tartine will allow them to push a full cafe/bakery experience like La Boulange did but with higher quality coffee and baked goods. Starbucks is now the "everyday" coffee and Blue Bottle will do to Starbucks what Starbucks did to coffee shop coffee.