Well, those guys are building something vastly more complex than advertising software, possibly without agile and scrum, and they deliver high stake working sof

Well, those guys are building something vastly more complex than advertising software, possibly without agile and scrum, and they deliver high stake working software. Likewise, I've seen agile purists deliver totally broken login screens. The difference, in my opinion, lies in the software's end goal; software you write for a NASA space flight might kill the astronaut you've met at NASA. Software you write for a login screen won't, as it's not as high stake. You're probably going to put on your head phones, pick a YouTube playlist, scroll through JIRA, and meme around on slack. We've evolved thousands of years fighting real physical threats, and we have implemented processes to deal with these physical threats in order to survive. A JIRA ticket for a broken login screen just does not trigger the same brain pattern response as your astronaut friend burning to death during orbital re-entry.