First of all, welcome to the forum.
Assuming you are basically starting from scratch, having $2 million post-tax dollars to your name in 10 years will be a challenge at a savings rate of $5k per month. I hate to say it--and I am clearly not an omniscient god by any means--but you will probably have to start a business despite your wish to not do so.
If you don't want to quit your job (as you stated), you can always look into being a "chicken entrepreneur" and running your business on the side.
A killer investment may come your way in the next 10 years. With the global economy going through financial implosion, fire sales will appear more commonly. But you may or may not be exposed to them, be able to take advantage of them, know the right people, whatever. You should always keep your eyes open for opportunities, as they will begin to appear more and more, but a business is something you can put time and effort into now.