What is common among “Gmail” , “GoogleNews” & “PostIt notes”?

Google , 3M have been very well known for providjng a lot of autonomy to employees to showcase their creativity.

In an effort to create a Result Oriented Work Environment(ROWE), it has historically provided employees a leeway of using 20% of their time to do something outside their realm of work.

This autonomy provided to employees have incidentally given birth to these iconic creations.