Because it rarely does end up in courts. But having a fair and strong judicial system is a feature not a bug. The parent points out, in the end there must be a way to resolve accountability and ideally it's done in a manner where both parties can be heard and make a case. Find me a better system than a judicial system for this? Mobs?

The point is not primarily the court. The court is an example of someplace where we have accountability, but we build accountability mechanisms as foundational to most of our computing.

Tracebacks, debuggers, logging, etc. We put enormous resources into not only the bad case, but the potential that a bad case could occur. When something goes wrong, we want to know why, and we want to make sure that something bad like that doesn't happen again.

The court is the regulator of last resort. A company that gets taken to court would likely have been sanctioned by the government regulators of another country.

Also, court is unavailable in many cases now. Binding arbitration is very common now, but this would be illegal in many other places.