All this talk about cloud costs going up to cater for resiliency isn't new. It applies to your on-premise systems too.
If you think that DR, resiliency, etc are too expensive, that's fine. That's your value judgement. But you have to assess the impact to your organisation/business on an outage and make an informed decision.
Just don't blame Amazon, Azure, etc. if you decided not to buy resiliency and their systems go off-line.