Don’t forget the biggest interruption of all … the commute, sometimes 1-2 hours or more per day, just to get to the office and take advantage of the “benefits”.
I don't start working on something hard just before leaving home, like I don't start before a meeting. It's the surprises that really tear up the workday.
"Interruption" is only one side of the coin, there's usually a reason why somebody is interrupting you and not being able to interrupt you (=not get an important information) will often cost a lot for their productivity.
I think it heavily depends on the person and type of work. I'm SWE and for most daily work I don't mind getting interrupted - I'm able to get back to work without a problem. It's only if I work on an extra difficult problem which requires very deep focus, I go somewhere quiet, but that's less than once a week.
I think having deep work to do is the biggest sign that a team has found a good use for me. It's how tech companies build competitive products. Commodity work should be automated; Moore's Law already paid for doing that.