Looks like MIT is really trying to stake out Kendall as "their" square, akin to Harvard as Harvard's.
FK4 -- No -- Harvard missed the chance to create their Kendall -- There is very little non-Harvard in Harvard Sq. except for food, drink, banks, and misc shops
Kendall by comparison is a logical extension of MIT's fundamental Mens et Manus motto -- the basic concepts and fundamental practice that were taught in the class room and teaching lab
When MIT arrived in Cambridge 100 years ago -- William Barton Rogers concept for an Institute of Technology [1860] and MIT's logo "Mens et Manus" [mind & hand] was established but limited to the campus. In the first few decades of the 20th C -- MIT joined the Great Universities in creating new knowledge in the academic professorial lab -- the Oxford, Cambridge, Harvard, etc. model
However the Rad Lab during WWII -- changed everything -- focused on transforming fundamental knowledge of electrons, magnetism, EM radiation propagation and scattering into WWII #1 War Winning technology -- microwave Radar
Harvard had a role with their radio research as well -- but after the war was over they went back to each key professor leading his small coterie of associates
MIT -- just in essence changed the name of the Rad Lab to the Research Lab for Electronics -- and the modern multidisciplinary academic research lab was born
The next major step was the extension of the academic research laboratory out to the corporate research lab and on to the practical and productive through consulting and start-ups.
This MIT and to a an extent Stanford and a lesser extent Harvard did during the 60's, 70's and 80's with profs starting up companies focused on commercializing research.
However, what MIT has pioneered and is to a large part responsible for Kendall's boom is the embedding of MIT's research right into the corporate environment through a number of vehicles such as AL Lab, Whitehead, Broad, the Media Lab, ISN, etc.
These multidisciplinary labs with a mix of MIT faculty and research staff and industry people all surrounded and permeated by eager MIT undergraduate and graduate students -- located just off of the campus proper is unique in the US although the UT Austin has tried to emulate some of it.
All that then attracted the pure corporate r&d labs that want to be neighbors in the hood and so you have Novartis, Pfizer, Shire coming from all around the world with the natives just in biotech and pharma. In Information Tech we now have Google, Microsoft, IBM and Amazon plus locals. There are a handful of other major corporate players in Kendall including Schlumberger and I wouldn't be surprised at all if GE didn't set up shop as well.
So -- No this not MIT's Harvard Sq. -- on the contrary Harvard is belatedly trying on western Ave to make a Kendall Sq.
Note - - I apologize to any labs or firms that I should have included -- this is by no means exhaustive