Instagram and Snapchat share exactly 1 feature ("Stories"), so I really don't see how this shows that Snapchat is failing due to Google/FB monopoly, and not due to the reason I listed above.
Instagram is more analogous to Twitter, and I assume advertisements occur both within the "Stories" and the newsfeed - this seems much more favorable to advertisers and is something advertisers are more used to.
Instagram is more analogous to Twitter, and I assume advertisements occur both within the "Stories" and the newsfeed - this seems much more favorable to advertisers and is something advertisers are more used to.