I have lots of off-plan experience. In my experience escrow is rare. It can exist and you significantly reduce risk if available. It depends on the market you invest in. I invest primarily in Eastern Europe. The developers there have no need to offer escrow since there is significant demand for property in the local market without it.
Other markets may offer escrow, but my guess is that with the lower risk comes lower return. I say again. Higher returns = higher risk. Lower risk = lower returns.
WCP - I can understand your concerns, I too am concerned, but I think your pessimism is grounded on speculation about their position rather than any real knowledge. We need a lot more information on their position before we should truly be be concerned. I'll see what I can find out.