Yeah, but mostly focused on keeping bad guys out, not making sure the good guys can get in. (E.g. hving your servers in someone elses data center is probably more secure than trying to secure them physically in a startups office, but means getting to them is harder for you as well)
I could see an argument for colocating this type of enterprise in a secure data centre. There are places with 24/7 surveillance and 24/7 armed staff on site and they are going to do the security better than your average group of startup guys.