I've been following the story of a Westerner (I believe he is American) that is taking a land trip through Africa[1]. While there are areas of great, geniune people, many of his stories involve people, both government and private, in the countries trying to exploit him for money, gifts, etc...
He went into a rant in one of his posts that I think has been removed now, but the gist was that years of free handouts from the West is the reason for this behavior.
I don't know how to fix it, but this mentality and perception has to be fixed by the African people -- the West is not going to change on its own. The problem seems to ultimately have been created by the West, and should be fixed by the West, but the reality of the situation is that is not likely to happen. If Africa wants Western investment, it will need to address these stereotypes and perceptions, otherwise China will continue investing. They are not involved in African politics now, but wait 50 years and see if that is still the story. They have to establish their grip on the money first. Once they have solid control of the money, the control of the people will follow.
Your second is more complex, but the general principle of a rich visitor being shaken down is very, very old - after all, you clearly have the means to come visit, while the reverse is not generally the case.
1: https://www.theguardian.com/world/2014/jan/24/africa-clinton
Since this is a startup/hacker forum, what do you think about entrepreneurs moving there to not only start a business, while being ethically charitable and involved in the locally community (rather than just being a digital nomad). Would this be accepted culturally, or would I just be viewed as a rich foreigner trying to trick/scam the populace?
I've only visited the continent as a tourist, but am very interested in your perspective on cultural viewpoints. And followup question -- are certain African nations more open to outsiders than others?
In other African countries the racial context would prevent it (Southern African countries) or they're more protectionist(Anglophone West African states).
I could also see Uganda and Rwanda also being quite welcoming of such an effort as they're making big moves on trying to grow their tech sectors. The latter two are repressive dictatorships though politically. Economically and socially however the people are largely free. Kenya by comparison is a deeply messy and perhaps perpetually corrupt democracy.
America excels more traditionally on capacity("soft" work to do with say governance, healthcare, NGOs, and also committed through the IMF/World Bank).
Africans don't need charity. The NGO industrial complex has failed to create modern states, it can deliver great help to badly affected communities but it can't leapstart growth. We all know the US won't invest tens of billions in African countries, but change your perception of Africa as some place to be helped, and countries that want investment, this explains why China has become such a big player on the continent.