I never used TikTok so I’m commenting on the assumption that now things are the same everywhere.
I can believe that there is a lot of manipulated content. But then when it comes to decide which content is manipulated and which isn’t most of the time the decision is the opposite of the truth, except for that content manipulated on purpose to provide the false alternative and trap the discussion between two falsehoods.
To get an idea of the cost choose any cloud service and see how much you pay for the server usage by the hour. Try to llok at all the other costs involved in the business, production of dedicated content is not cheap. All the company staff, the administration and the billing have a cost.
Do not go by assumptions, measure, try to get an idea of the real costs.