Medium sized VC funded companies are usually not profitable month to month, and have a runway - how many months till we run out of cash? Previously, having two

Medium sized VC funded companies are usually not profitable month to month, and have a runway - how many months till we run out of cash? Previously, having two years of runway was considered plenty since new rounds were raised every 18 months or so. The word around VCs is that there won’t be as much bubbly investment as there was in the last decade, so now a four year runway is a common target. So you cut costs till you get to a four year runway.