Sad to say ... this is a feature that's been there since at least 10.2 and our company relies on it quite heavily as you can imagine.
Many companies, including mine, will never update an OS until it has had a few point upgrades. I learned from hard experience. I upgraded from Tiger to Leopard on launch day, and my computer became a brick. I barely escaped retrieving my data.
Since then, I've always waited at least until .4 or better still .6 to upgrade. That means waiting about a year.
For Snow Leopard, Lion and Mountain Lion, I watched from the sidelines as the flood of people, who just couldn't wait, dived into the new OS, and struggled with the initial bugs. Why? Why not wait till it gets to .4 or .5 where it's mostly stable?
I am surprised that your business does not follow such conservative practices.
For my business, Apple Mail is critical to daily running, and it'd be rash of me to upgrade to a new OS on its first iteration. I won't be upgrading to Mavericks until at least .4 or .5
I'm not saying that this level of cautiousness is needed for people who just surf the web, send a few social emails etc. but if your business depends on it, this level of cautiousness has its benefits.
Besides, that's hardly anything in Mavericks that I can't wait for at least a year till it gets ultra stable.