Ran the same prompt set across ChatGPT, Claude, Gemini and Perplexity: five ways a real buyer asks "which database/storage should I use", 20 answers per company, same questions for everyone so it is comparable. The part I did not expect: the serverless newcomers are already the default. Neon got recommended first in 14 of 20, Upstash in 11, Turso in 9. So a challenger clearly can become AI's go-to, it is not locked to the incumbents. But the moment I asked about a specialized job, ...