You calculate the cutoffs as savings for this years while imagining that the future payments are payments only for this year. At the same time the commitments are for 5-20 years ahead and the laid off people would be off the payroll for the same multiple years ahead.
They're a suicidal bet, because they assume cloud LLMs are efficient and inevitable.
Neither of those is true, or even likely, and we're going to see the consequences by the end of the decade.