Are computers in favour of capitalism or socialism?

No, they aren't.

Jack, made my day; Tom, forgive us

It was developed by capitalist, and made popular by capitalists. Russia practices censorship.
Can you guess why computers favor capitalism?

because they have capitals in many fonts?

Too many fonts, and no ink.

Apples favor socialism.
PCs favor capitalism.
Linux boxes lie along the Anarchism-Libertarianism continuum.

Look at how much cash Bill Gates has on his Enterprise he built with Microsoft & how much the late Steve Jobs made on Apple if that's not a capitalistic concept I don't know what possibly could be.

Computers are influential and very powerful to certain extents depending on the aspect. At the same time, I don't think many people have given enough credit to Doug Engelbart for his Brilliant work of making & implementing the concept of Human/Computer augmentation real.