That’s a western perspective because we are spoiled and have no thought for sustainability.

Please take a look at poor countries of the world like Pakistan. They have a repair culture. They have vehicles from the 80’s out on the road doing daily driving work instead of being used as vintage show pieces. It’s a poor country, this is a necessity. But nevertheless seeing the repair culture there in contrast to the disposable culture in the western world makes me pause.

This... I wonder why isn't there a market in Tijuana, Juarez and other border towns for fixing broken electronics and similar appliances.

Here in Mexico there are plenty of "unofficial" laptops/mobile (Apple, Windows, Androids) repair shops that even receive your device by DHL/UPS, fix it and return it. Because the labor costs are low enough to make it worth. The only downside is that most of the spare parts are imported from the US.

In Western countries, the time of skilled repairmen is better spent repairing things which are much more important and expensive than consumer goods.

And a consumer usually has a much higher return from working in his specialized field to earn money and buy a new product, than spending time with difficult repairs of a broken product.