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So they made a search-engine based on deep learning for a specific (but quite large) target group.

How long do they think it will take Google to catch up, if they haven't already?

Is this target market big enough to interest Google?

Yes. We're talking fashion, so a pretty big market.

We're not talking "fashion". Not the whole industry. Just the market for an app like this.

Arguably everyone interested in fashion could be interested in an app like this.

And arguably everyone interested in reading could be interested in Google Reader, but even that didn't interest Google.