Re: "communism"
Capitalism is the system now shown in the long term to result in the LEAST amount of overall deaths and the best chance of "upward mobility" of all layers of society.
TRUE communism doesn't exist. True communism CANNOT exist because there will always be authority and there will always be those that TAKE authority if there is no good system to suppress them. Communism doesn't have the means to prevent those in charge from taking the power and authority for themselves. There must always be a "transition period" and once that transitional "government" is in charge there will always be those who take power who will not want to then relinquish it. See Russia, Cuba, China and every other communist experiment ever. Communism has not worked, communism will not work, communism cannot work. It's killed tens if not hundreds of millions every time its been tried and there is absolutely NO excuse to think any further attempt will be different.
Your claims amount to "well if I were in charge" and I can guarantee you that if you TRY to enact your version of "true" communism, you'll either fail or get removed and erased from history by less scrupulous people in very very short order.
The people worked to death in the mines or in he textile industry would before those existed worked themselves to death in the fields of subsistence level farming or worked themselves to death in less organised mines or home textile operations. Capitalism didn't change anything in that. Under communism they would have STILL worked themselves to death in the mines or mills, as "equals" to those working themselves to death in the factories or on the farms because someone has to do those jobs and everyone being equal, they can work themselves to death just fine. Communism wouldn't change that (In fact it probably made it worse).
I suggest you read books like "the gulag archipelago" and read up on how people under every single nominally communist system actually worked and lived. Or better yet talk to people who lived it. It wasn't better (and for some it wasn't worse either). People have been abused and oppressed under every single political system in the world. A somewhat controlled capitalism under a democratic government seems by far to be the most benign form we have until now found.
Capitalism is far from perfect and horrendous things have been done, but to think they wouldn't have happened under your flavour of "communism" or any other sort of system is naive at best.