Duma,
Great job stating both sides. Agree that the market does worry about the bear case concerns and that the market also sees the bull flipside. I obviously tend to lean to the bull side right now. Have been in this stock since April 2017, but wish I had found it sooner.
I actually got into the TTD stock because in my job at a large IT VAR, I actually have as a client one of the 4 largest ad agency holding companies (the 4 are: WPP, Omnicom, Publicis, and Interpublic). I started getting news feeds on this client and trying to understand their industry better and it was quickly apparent that they were old school (Mad Men) and looking to shift to digital/programmatic, and that this shift was just now happening in real-time (like AWS/Cloud in 2012-2013). Anyway, it is all really interesting to me because it is sort of this cool blend of technology (digital, data mining, BI, AI) in the commercial space but where the end product is all these brands we all know and see everyday. If you don’t really think about it, you don’t notice how much advertising makes the world go round. TV ads, radio ads, newspaper/magazine ads, billboards, mailers, telemarketing…these are the traditional methods. Now it is about my digital footprint indicating my interests and allowing (in theory - we aren’t quite there yet) my every action on mobile, streaming (CTV), digital audio (Pandora, Spotify) to have a more personalized ad experience. On Netflix I rate the shows I watch to help them provide a better recommended list. On google’s news feed I block tons of spam sources, highlight preferred sources, and indicate my interests and have a daily news feed that is much more streamlined and relevant than just blindly surfing major websites. Some people can sweat the privacy concerns, and I get that, but I am not telling them personal family info or giving my credit card number…I just want the big giant messy online world to be more relevant and interesting to me. Nothing drives me crazier than having the commercials/ads I come across be repetitive and uninteresting, whether it is tv, streaming, or radio.
So I welcome our digital and personalized future, even if robot overlords probably come with it. 
Thanks for the great write up, and the links to the investor day presos…I posted those on Seeking Alpha but don’t think I did yet here at the Fool. There is a ton of info in those investor slides and I thought they did a great job during that Investor Day last year. It can get a bit technical, but I like that the leadership can get in the weeds…they understand the nuances and have skin in the game, which I like in an exec team. I wish there was an audio recording to go along with the slides from the Investor Day, but I haven’t seen one. Slides are great, but the majority of the info is verbalized in presentations like that. Hopefully the Investor Day is an annual thing, and maybe they have another one sometime after Summer.
-Dreamer