netflix is probably adding commercials soon and i have related feelings about it that are likely greatly influenced by what others have said
For whatever could be said about rival streaming services, most of them approach their content through the lens of being a content provider first and the technology second. This has bitten plenty of streaming services in the keister when it comes to, well, the act of streaming (Disney+ occasionally requires a restart on my Roku to run well and good luck rewinding on HBO Max without causing World War 3), but when it comes to cultivating programming for a wide audience, these rival services understand and respect the niches they are serving, which is how you get stuff like a 30-Rockification of the life story of one of America's most respected poets and the director of a "Thor" film making a TV show about gay pirates.
With Netflix, however, if a project isn't an immediate international smash, it's on the chopping block, and if it isn't a smash after two seasons, it's probably dead. "American Vandal"? Critically acclaimed, did great numbers, canceled after two seasons. "Babysitters Club"? Critically acclaimed, did great numbers, canceled after two seasons. "G.L.O.W."? Critically acclaimed, did great numbers, got three seasons, filming of the fourth season was underway but got shut down thanks to the pandemic, then canceled. "Santa Clara Diet"? Critically acclaimed, did great numbers, canceled after three seasons, and if a sizable audience that would watch Drew Barrymore in literally anything can't assure your story reaches its proper end, then nothing short of a "Orange Is the New Black" or "Squid Game" is safe, which speaks to a bigger problem than "Netflix canceled my favorite show". With Netflix's proven track record for killing shows without mercy, why should I get invested in the next show Netflix puts out?
Fortunately, if cable is any indication, ads will serve as a wonderful short-term solution, which is probably all they care about. The problem is what comes after the short term, and before you know it, Netflix will be filled to the brim with ads and they'll be asking you to pay five-to-seven extra bucks a month so you have access to their latest hip show starring your favorite actress that they'll cancel a whole season before the story proper concludes.
tl;dr: season six of "Big Mouth" premieres later this year.