While I agree that UCM and other semi-fixed process-based centralized tools have kept companies captive, certainly you must agree that Neuma's CM+, the most centralized CM/ALM tool, is quite the opposite.
It is priced low, typically under $1000/user (for ALL ALM functions, not just CM, and this includes its CM+MultiSite, the most advanced multiple site CM/ALM tool in the industry).
It allows full customization of Process, User Interface (menus, quick links, tool bars, dashboards dialogs, etc.), Roles, Data Schema, etc. while providing a very extensive, but lean (approx. 1+ line of code per configured item) customization capability, well beyond the likes of script intensive tools. Customization is INTERACTIVE, FUN, EASY and FAST.
The underlying technology ensures longevity of the solution. The oldest CM/ALM libraries are more than 20 years old and still contain every bit of history.
To further ensure that corporations are not locked it, it has near-zero administration - that means you don't need a CM Tool administrator, only someone who can occasionally help with upgrades (typically minutes), as well as do some customization tweaks.
Neuma is always willing to help with customization, and usually at no cost, since customization is done at such a high level that makes it easy to do, in most cases, the same day, through an email exchange.
And because CM+MultiSite extends across the entire repository, it's not just the version control that benefits from it - every ALM function, AS WELL AS ANY NEW FUNCTION ADDED BY THE CUSTOMER.
The integration of all the ALM functions plus additional custom functions into one interface, with one point of minimal administration, fully custom role-based user interfaces and easy customization lead to a dramatically advanced user experience.
Point-and-click, rapid data navigation.
All my important data accessible through a single dashboard.
Advanced, 35 year-old mature CM technology that reduces the complexity of the user experience while advancing the capabilities of CM beyond the industry norm.
So, in summary... Centralized CM/ALM, DONE RIGHT, is not just better than distributed, and best-of-breed alternatives - it's essential to being truely competitive and having all the information at your fingertips for the best corporate, management, and developer decision making.