> Do you really think they won't give Netflix the shaft when it suits their strategic interest?

If it suited their strategic interest, sure Netflix could get the shaft. Is that scenario likely to play out, seems unlikely. Netflix is one of AWS earliest and most prominent customers.

I would imagine Netflix would leave Amazon long before Amazon shifts their strategy to take out Netflix.

Their strategic needs of keeping AWS as a trusted platform override any potential gains from giving Netflix the shaft - particularly since they'd be stupid to assume that Netflix doesn't have a contingency plan.