"There are plenty of companies that get acquired before having a solid business proposition."
That doesn't make it a good idea. The answer to "Who is your target market?" should not be "Uhhh... Google?" There are many more companies that built a "cool" product that was useful and used, couldn't monetize it, and died because of lack of capital. Somehow I doubt YC has ever invested in a company that flat out had no exit strategy outside of being acquired by a big company. You've got to have something because if none of the big fish bite you're screwed otherwise.
That doesn't make it a good idea. The answer to "Who is your target market?" should not be "Uhhh... Google?" There are many more companies that built a "cool" product that was useful and used, couldn't monetize it, and died because of lack of capital. Somehow I doubt YC has ever invested in a company that flat out had no exit strategy outside of being acquired by a big company. You've got to have something because if none of the big fish bite you're screwed otherwise.