What's the time lag until we run out of IPv4 addresses at the VPS/hosting provider and broadband ISP level? I see the situation getting progressively more dire

What's the time lag until we run out of IPv4 addresses at the VPS/hosting provider and broadband ISP level? I see the situation getting progressively more dire, and presumably these notifications are there to try and get people moving to avoid the wall; but assuming everyone keeps operating as close to the status quo as they are able, how long before we truly hit the wall?