Instagram has single handedly dominated mobile devices with its easy to use platform and social capabilities for entertainment. Since Facebook's acquisition of Instagram, things basically remained the same until now. Instagram has now provided regular web capabilities for Instagram so users can now access and share photos from any device with Internet, but why is this important?
When Facebook purchased Instagram for one billion dollars, Instagram was not monetized and has not been monetized to date. There were limited options for monetization that would not hinder the current user experience. Placing advertisements on the mobile platform would surely destroy the current user experience on mobile devices, but not so much on a web platform. This is why I believe that the main purpose for Instagram gravitating to the web is to begin placing advertisements in that space instead. Although the web platform and interface is currently advertisement free, I suspect that prolonged use and likability for the new option will precede any placements.
In order for users and the public to be more accepting to advertisements on Instagram, unique ideas and promotions will have to be used to ease the transition. History has proven that creative ads and initiatives are usually accepted more than bland conventional methods. This may also be another opportunity for an additional integration with Facebook. Public criticism was very high when it came to the merger and Instagram claims a high demand for web presence so any changes on the micro or macro level will become news.
At the end of the day, users simply want convenient access to Instagram from any device or location. Facebook has been notorious for making sudden and significant changes without warning with the exception of the most recent timeline addition to their platform. These past actions will always have users uneasy towards any thought towards significant changes.