When I worked there, they disclosed all financials in our internal Confluence site. There was a policy of full transparency with the employees. The owners (Mike and Scott) had impressive business discipline. They were profitable every quarter. They had many many opportunities to get vc money and go wild. When they finally took VC money, It was a modest amount ($60M I think) and the purpose was explained to us as setting up an ESOP program and putting Atlassian on the path to go public.
A year or two later, Doug Berman, the founder of Great Plains software became chairman of the Atlassian board. He gave a presentation to all of the employees at the Sydney office. One thing that stood out was that he said, it's actually bad to be profitable when you're growing. I'm paraphrasing here but he essentially said, you're leaving growth on the table. His thesis was growth is more important than profits.
So whether you agree with that or not, that is obviously the idea they are operating on rather than uncontrolled spending and helicopter dropping stock on employees heads out of desperation.