Depending on how the markets react, prices may go up, and many of the really cheap brands could disappear from the shelves, or just have their fat/sugar contents increased. There's also a non-zero chance that new African brands will grab a part of the low-end of the market, with protectionist measures implemented to respond to them.
Ghana's electricity supply is 51% fossil fuel, whereas Switzerland is 2.5%.
But its a lot easier to build solar plants in Accra than in Bern...
I think that Europe is at a fundamental disadvantage over the medium/long-term, due to the burden of its welfare states.
Its surprising to see that taxes over basically all categories are lower in Ghana than in Europe (except corporate taxes).
The minimum monthly aged pension is €6.60 in Ghana, vs €1,080 in Switzerland. Life expectancy is 20 years longer in Switzerland than Ghana, but the retirement age is only 4 years later.
The end effect of these extremely early and generous pensions is that economies become stratified, to ensure that these pension payments are maintained, and taxes are heaped on individuals to pay for it.
Europe needs a widespread increase of the aged pension age to 70, cease all migration from regions with high usage of welfare state service, and begin a large, multi-generational modular nuclear power plant building plan.
If you look at this list, you'll know something is horribly wrong with these economies: https://en.wikipedia.org/wiki/List_of_countries_by_tax_reven...
The ones at the top are all European except for Cuba...
That said, the potential for Ghanaians to thrive is astounding. Incremental improvements will yield incremental gains. It is a tropical paradise emerging from the weight of poverty.
Also, the mangoes are hands-down the finest I have ever tasted.
And I don't see why the big markets (EU, US) would want to protect Swiss companies.
Now, if other African countries tried doing this to the EU and re. other raw materials on the other hand...