That's a very faulty understanding of economics and labour. Wealth is created by man interacting with nature. Most nations in the history of the world created their wealth without being dependent on foreign money. Of course there are endless opportunities in Kenya, just as in other countries. The limiting factors are political and/or cultural. If some of the most barren countries in the world could spawn rich nations, what's lacking in Kenya?

This depends solely on what you're defining as an opportunity. Are the job positions there today? I.e., the "opportunity" that's an alternative to writing essays for foreign nations? Not enough of them. Could they be after a long cascade of primary, secondary, tertiary and quaternary development? Yes. But they aren't there today. That's the key thing. People need to put food on the table today.