We indeed have no plans to acquire Jetbrains. I think they are doing awesome and we probably couldn't afford them. But also we would like to have a development environment that runs online while allowing for browser based and client based editors. Currently we're looking at Koding https://gitlab.com/gitlab-org/gitlab-ce/issues/12759
This doesn't change the affordability bit, but IDEA is working on a web hosted IDE. They are rolling it out as an online code review tool first, with nice features like goto definition, but eventually going to full run tests or edit code.