Agree, the received wisdom has always been database vendor choice as a ten-year commitment, as opposed to almost anything else. It's a reason to avoid databases :)
Strongly disagreed that it's a good reason to avoid databases. If you are going to collect data of any value over a long period of time, pick a horse and stay on it. Over time, technology and business needs might force a re-evaluation of that position, but you don't want to build around unmeasured plans to maybe switch databases at random some day.
