In the house, there must be a main protection device before the meter, i.e. the main fuses. For this, a fire protection switch should (must) be installed in a wooden house. For photovoltaic systems, a surge protection device must be installed. Then at least 2 RCDs. And additional space for expansions (e-car), more circuit breakers, energy management, possibly actuators or a timer switch,... Of course, the/a PC has 700W. Have you ever measured what it really needs? What is your current annual kWh consumption? 700W is not always the input power, sometimes also the output. A normal office PC doesn’t draw more than 40W (thanks to SSD and Intel power management). I currently have a few ESXi servers for virtual desktops at the company, each with 2x1.6kW, but the Tesla graphics cards are really brutal in extended tests... back to the topic: why more sockets = more space in the cabinet, I cannot understand. The cables don’t converge in a star pattern, nor are there groups implemented. In our case, each room has its own feeder with separate protection. Then the stove separately ... But that is actually a matter for the general contractor and electrician. We didn’t have to pay extra for the larger cabinet etc.