&gt;<i>Today&#x27;s mindshare is tomorrow&#x27;s market share.</i><p>Even if so, you&#x27;re overestimating RethinkDB&#x27;s mindshare outside of the HN echo chamber (and I say that even though I&#x27;d prefer RethinkDB myself).<p>If mindshare equals to developers knowing &quot;this product exists&quot;, thinking &quot;this product is good, I should use it&quot;, or deploying it, then Mongo wins by a factor of 4 or 5.<p>There&#x27;s also the mindshare that Mongo has in companies building integrations for it, third party products etc.<p>And of course millions of CS&#x2F;IT students today know about Mongo and will use it in this project or another, whereas very few know about RethinkDB. Those will be &quot;tomorrow&#x27;s market share&quot;.