Sometimes, a tool of magic is more useful than the modern tools that they are used to.
Not only do they use different kinds of power source, but they also have more functions and anyone with specialties can create them
There is no big company monopolizing these tools because everyone who has magic could create some amateur tools that surpassed the modern tools that they are used to.
Instead of air conditioner, there is ice shard filled with magic that brings cool breeze. This is even easier than creating a tool.
Just find the ice shard and bring it inside and it regulates the heat.
The only thing that needed to be added to the ice shard is formation magic so that it could regulate the cold that it emitted.
Temperature regulator.
If someone hired a formation master or some people who have the craftsman class, they could add a temperature regular to the ice shard.
