For the Capitalist crowd, YES it is the biggest cost. The next is energy. Imagine a world where your research and development is all AI and the production is all automated by robots. Instant product to sell to the masses who has no money because no one is working.
In the future a few thousand billionaire geniuses will own a world of unimaginable luxury and near-infinite longevity. They will make the decisions, AI will execute them, and robots will do the physical work.
Everyone else will be reduced to compost.
It's the perfect plan. The final definitive justification for capitalism.
The masses are unnecessary. The masses will be optimised.
What could possibly go wrong?