Also, the price will fall, these trucks will be sold second, third, tenth hand... Same as with "expensive" mobile phones in years past.
You will find that Toyota comfortably holds this niche in most developing countries. Toyotas are reliable, and there's a glut of cheap Toyota spares due to network effects. The only advantage the Ox has over a Toyota Hilux is that it can carry about 800kg more (about double). On all other points, the Hilux is ahead or on par.
Although the new Hilux cars seem to be quite popular in Africa and Middle East too. Perhaps it's the brand, or perhaps there are some similarities (or even interchangeable parts) that make it desirable.
Looking on the roads around me the VW T3 is really popular around here for people who want to get things done, you can find decent enough examples at around 800-1000 euros (I know because I also looked at purchasing one). The repairs are easy to do, lots of spare parts available, and if you think diesel is too expensive you can always install a LPG system on it and now it becomes even cheaper to run it. Unfortunately the next T4 model is a little too big.
For a similar example that comes from Eastern Europe also look at UAZ-452 (https://en.wikipedia.org/wiki/UAZ-452), that's a very durable and reasonably cheap car that can handle almost anything.
The article does mention taxes and customs as one motivator for this design.
What makes you confident to say this about a vehicle that was just released in it's first iteration and has yet to stand the test of time?