That's on the user side, though. Like AWS and Azure, chances are GCP/Google's internal hardware division bills internal teams similarly to external customers (especially as Sundar continues to demand cost cuts). Of course users themselves can't go and make their own website and experience the same economies of scale that only big companies can achieve, but if competitors come in (like ByteDance) there's nothing stopping them from stealing marketshare from YouTube if they invest in some colocated servers in key markets.