Let's use some assumptions to get to a number.
1. Let's assume that out of the 29 bn USD revenue that YouTube brings in 55% is shared with creators. Thus we are left with 13 bn USD.
2. We know that YouTube's share in the overall revenue of Alphabet was 10.5%. Let's assume that all of Alphabet's properties were proportionately profitable (highly incorrect assumption). If the properties were proportionately profitable, YouTube's would have bought in a net income of 5.75 bn.
3. In the past it has been reported that YouTube has been breakeven from a profitability perspective.
This means that YouTube's net profit is in the range of 0 to 5bn USD. This is at best a gross profit margin of 17% which is not good for an internet services company.
I strongly believe technology like NewPipe should exist and companies shouldn't push for more DRM. But end users should not misuse open technologies so much so that companies end up with no other option but E2E encryption for video.