Bit late to the discussion, but from personal experience in working with a Prefecture of Silicon Valley to start a castle in Trivandrum....
Bade-saar, is 400% correct - the things that mattered in this story below, with the Daimyo of one of the largest Prefectures of the Valley (headed by the Last Shogun of Silicon Valley  

  ) are these in descending order:
- attrition reduction measures and ability for a corporate to set in place the same
- Research orgs (VSSC, IISER, IIST, RGCB etc helped)
- IT eco-system with successful startups (UST Global), product firms (Suntec, IBS) etc
- Affordable housing
- kids' educational institutions
- leisure and recreation
- general infrastructure
What they did not care about:
- facilities cost.
- salary
- commies
- hartal
The entire effort was a great example of prominent people from LDF (Shree VS Achuthanandan, the then CM) and UDF (Dr Tharoor, the current MP and favorite of BRF  

 ) coming together and dividing the labour (as well as credits - they are politicians of course and dont grudge them).  I was in the video-meeting when Dr Tharoor did a world-class job of pitching it to the powerful Daimyo.  Happiest day when the Daimyo informed that the reclusive Shogun has nodded his head in accepting the new castle!!
Later on, the Daimyo's captains complimented the execution of their vision of castle by a certain unassuming 
Technopark babu of great calibre.  When I was chatting with them later, they compared him with Shree CBNaidu's team and said they are hiking up the number of foot-soldiers from 200 to 500 (that is in less than a year).  So Shree VS too did his part in empowering the babu to do his work.  
Later on, the Prefecture served as an excellent case-study and referral (The Daimyo was nice to provide that ), that the team racked up two more big MNCs.
So Sachin-saar, not bad for a commie CM and his blood-foe (Dr Tharoor) belonging to a much maligned socialist, anti-bijinejj paradise, eh?
Trivandrum,  I believe at this point, has that breakthrough Product MNC (Prefecture mentioned) and the breakthrough local IT startup (UST Global).  
Of course, it will never challenge any of the major cities like Blr, Hyd or NCR and it should not.  But if anyone wants an alternative working place that is more of a laid-back place near the sea, they get it without loosing out on things like housing, kids' education, quality living etc.  Sort of like an Austin or Portland or Seattle  (hippies, chai-shops, music, yoga, beach, aerospace, universities etc) not challenging Silicon Valley, Mass or SD/LA.
It is up to the current Kerala govt to not mess it up.  But mess it up they will, with their ever lasting love affair with Middle-east 

  Unless the current CM goes and executes on his yearning for a lasting legacy.  Technocity project is still going forward with some momentum, thanks to unseen folks pushing it forward inch-by-inch (under the radar) and media (fortunately) neglecting it.  The slow education of all parties in the equation takes time, but it has been done before and can be done again.  It needs a certain non-mercantile mindset and near-infinite patience.
On a different topic about Indian IT, this is purely my IMHO:  That ex-head honcho of the most revered company has certain pretentious thoughts about his role in the Bangalore story.  But IMHO, the heroic guy who did the act of forging a unified story for Bangalore, around the pioneering product MNCs and local IT out-sourcing successes (like Infy, Wip) during those early days is the great Shree Dewang Mehta (PBUH).  Anyone who had the pleasure of meeting him will have some story about his sheer awesomeness and a certain unassuming enthusiasm that is infectious.  He mingles effortlessly with both the grunts (to get the pulse) and with suits out of MG Road, SandHill and Wall street.  A true kensai, who thought beyond BSE or NASDAQ (so I would like to think of his memory).
(edited a bit)