The reason why they are integrating advertisement is because they are getting paid to assist other brands to get audiences.
YouTube has over a billion viewers each month. It is an open platform for creators, filmmakers, etc. The best platform for networks to search out talent and also advertisement. Major companies use YouTube to advertise their products and services. As well as share profit with YouTubers as sponsorship. Now, YouTubers are integrating advertisement within their videos than a five to two minute ad break from their sponsors. The reason why they are integrating advertisement is because they are getting paid to assist other brands to get audiences. Brands that are not corporate but small businesses that needs awareness. It is important to understand the cost that companies spend on advertisement each month. YouTubers with mass subscribers and viewers are becoming marketing channels for businesses that are trying to grow their demography and geography.
The great thing about it is that YouTubers are accepting offers from outside which is a local Pizza joint or small retail boutique store. The thing is they have the leverage of asking price for their service. They can dictate reasonable cost per week or month of promoting your product through their video content. The thing is how much is reasonable for advertisement with a YouTuber, it is based on what they see as reasonable. It can be $500 to $5000. You never know. The benefit of teaming with a YouTube influencer is a plus.
Check out the article link below about how to partner with YouTubers.