[endersshadow]

I've been in the BI and data warehousing industry nearly my entire career, so hopefully I can help a bit.

1. Get an MBA if you want to transition more to management. This will relinquish really any technical responsibilities. MBAs matter a lot trying to get manager roles at large companies. They also are brilliant for networking--you can have a safe haven to meet potential cofounders who are very good at the business side of things while you work on the technical aspects. That said, just like I wouldn't encourage a woman to go to college to find a husband, I don't encourage you to go get an MBA just to find a co-founder. It's something you should be open to, but it may not happen.

2. The space is definitely moving quickly, but there's still a lot of traditional data warehousing stuff out there. Unfortunately, it's increasingly commoditized. If you're not getting a job because you don't know the latest technologies, then you should probably learn them. This would most likely be a bit more valuable use of your time than an MBA if you really want to remain technical. It may or may not be Hadoop (you may want to latch onto Cloudera or Hortonworks), but whatever your local market is bearing--I actually see quite a bit of variation throughout the country in terms of tools being used. If, however, you're not getting jobs because your price is too high, you may want to take the time to learn the things that will increase your value while biding time on the lower paying projects.

3. I don't know immigration law well enough to have any sort of comment about a startup in the US vs India.