You might be surprised.
Telcos need to troubleshoot network problems in real time, automakers and insurance companies need to track cars in real-time, oil companies need to interactively query and visualize geological data, and the infosec industry needs real-time packet analysis. We have customers almost in every vertical, all united by their need for real-time analytics. Some want to use MapD us visualization, others for programatic querying for things like fraud detection, and others still to feed into machine learning algorithms.
I'm also curious how you envisage paying thousands of dollars per year to get queries in dozens of ms on datasets this size, much less 10-100X larger (which customers would often use MapD for). Mark benchmarked a 6-node ds2.8xlarge cluster of Redshift (> $40/hour) and found it up to 70X slower than MapD on this dataset. That's similar to our price on Amazon for this 2-node cluster.
Not saying Redshift isn't a great system, just that I don't buy the price/performance numbers you are quoting (for real workloads, not for some specific query that can be indexed well, etc)