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The thing that disrupts you is always uglier and worse in some way. Less features, less developed. But if there’s a 10X price win in there somewhere, the cheap rickety thing wins in the end.
Think Linux vs. AT&T Unix, or mysql vs. Oracle.
Database gods bitch about mapreduce (sounds like the makings of a technology treadmill to me. Linux and MySQL are great examples, too: MySQL is steadily getting more expensive to maintain, and have you seen the size of the Linux kernel source recently?)