alt Hacker NewsNope. If the only kilowatts at your disposal are the ones that you, your slaves and your horses can digest, you cannot just upscale the production of goods (or anything else) arbitrarily. The whole economy is bottlenecked on production which is bottlenecked on energy supply. Increasing the demand when supply is the problem would only make things worse.
However once you're burning coal (or harness the wind in case of dutch) things are very different, kilowatts flow freely and all the things you say above start to be true.
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I would say that inventing new technologies is one of the things that isn't possible when you've enslaved the inventors and made them farmworkers.
I mean, making them do research might work. That's a command economy, aka actually existing communism. Should be able to invent the waterwheel and crop rotation.
I do think it's hard to invent antibiotics and the Haber-Bosch process, and without that you are still in a Malthusian economy where everyone's going to die if they slack off farming.
From 1000-1700 there was increasing wealth in Europe not through serfdom intensifying (but see Poland) but through increased trade, fishing, agricultural improvements and culminating in the steam engine. Watermills were medieval inventions.
Smith's pin factory has no steam engine. Nor did Slaters mill which created US industrialization. Steam required institutions to grow, institutions that had created growth earlier.