Why not? Because capitalism. New technology will continue to automate away more and more jobs, from manufacturing to the service industry. This could be one of the greatest achievements in human history, leading to that so-called "leisure society" futurists talked about, but that would require a massive overhaul of most countries' economic systems. All those gains in productivity mostly enrich the owner class while t…
If automation continues and demand stays the same, things like 3-day work weeks will come about naturally. A capitalist system would not prevent that from happening. Would you care to share why you think capitalism would prevent an increase in leisure time (even though it has been increasing since the industrial revolution)?
"Leisure time" was won by unions, collective bargaining and legislation. "The Weekend" only exists at all because of the collective actions of the workforce, not of capital owners.