Pretty sure the answer is ads. "Long-form" content has more opportunities to insert ads or sponsored content. There's not a lot of money to be made being quick and to the point.
People's viewing habits have also changed in response, rather than having the algorithm bounce them around they'd rather half-pay-attention to a 3 hour video. But I think the trend of ever-growing video lengths was spawned by a desire for more revenue.
People's viewing habits have also changed in response, rather than having the algorithm bounce them around they'd rather half-pay-attention to a 3 hour video. But I think the trend of ever-growing video lengths was spawned by a desire for more revenue.