I am sure that such training can become permanent. It's very convenient, you don't need to travel long distances to get to study. Thanks to the Internet, we can find a lot of necessary information to study the topic in depth.
I think cultural differences are very difficult to overcome. Cultural differences are considered to be how people think and act, they are unique in each culture, so it is impossible to overcome cultural differences in this way.
To motivate people to learn, you need to give people the conditions for this. A person can be motivated by high wages and the need for specialists.