In 2011, I (in-house corp app dev) was still stuck with HTTP services (behind a firewall, accessible only via VPN).
In 2014, public facing mobile apps using HTTP was prevalent enough to prompt name and shame campaigns. [1] My fuzzy memory suggests some banks were still using HTTP.
[1] https://arstechnica.com/information-technology/2014/08/new-w...
What was shifting at the time was developer views on using HTTPS for non-secure, unauthenticated portions of websites. This is where the "HTTPS Everywhere" plugin and other such movements came in.