What I can like about Facebook’s Instagram acquisition is that the ‘why’ leans towards the right side of the brain instead of the left.
See, I doubt Facebook did it for the user base, they employees, the idea or the cash-flow.
Business thinking at work.
I believe they did it because they like the melody in which Instagram have envisioned the idea and how that melody allows for improvisation.
You can copy and steal. Throw man-power and money at ideas. But you can’t reproduce the fine-tuning done by artists.