We keep seeing people in the industry with a reckless contempt for reliability. Rather than the next gamified mobile social network for cat videos, why do they

We keep seeing people in the industry with a reckless contempt for reliability. Rather than the next gamified mobile social network for cat videos, why do they choose to build databases of all things? Do they just want to be popular among a bunch of founders of moribund startups who don't have large enough scale or good enough analytics to notice how their storage has permanently corrupted their data? Did they just not know that write(2) on a socket doesn't wait for a TCP ACK, and not ever tcpdump their protocol?