IIRC they are a generation behind on CPUs, so must need capital to refresh/add new and competitive hardware. The default state at the bigger CSPs is to have this stuff rolling in even before it is generally available to the public.

That early access privilege, economies of scale, and access to cash flow or capital paints a somewhat dire picture for DO even ignoring "AI", although the AI boom has made physical infrastructure much more difficult to do at scale if you aren't already doing physical infra at scale.