Because the benefits of these tools are not distributed equally. The ultra wealthy will become even more wealthy and the unwashed masses will starve.
Of course the ideal outcome is the Star Trek post-scarcity utopia. But humans are not currently incentivized in a way that I can see leading to that outcome in our lifetimes.
Benefits of innovation start with the privileged, but invariably end up benefitting the masses. Cellphones once were once available only to the rich. Poor people have smart phones now.
Many may argue that the science and innovation in the last century was funded by the taxpayers and the government that proportionally taxes the poor more than the rich.
Workers merely made tools to make their own work processes more efficient which was taken by many corporations and applied across the workforce without the payment of proportional savings to the people who invented it.
The mass adoption of technology funds the future research process thus the profit is diverted from the masses directly to benefit and maintain competitive advantage.
The time saved due to technology never did reduce working hours or increase leisure time of the workforce.
Yet healthier foods are now less accessible to the poor. Where once the rich were fat and had rotten teeth from sweets, now the rich have trainers and personal chefs and healthier food. Poorer folks have food deserts and junk calories.
Innovation doesn't always trickle down. Sometimes it works in reverse to exploit the poor and the ignorant.
Having a smartphone is probably not hugely conducive to an increase in quality of health or happiness.
Sounds like OP is worried that they aren’t going to be able to afford a roof over their head. No government seems to be ready to roll out a plan to deal with huge swathes of the populous suddenly being out of a job because their employer wants bigger profits.
Of course the ideal outcome is the Star Trek post-scarcity utopia. But humans are not currently incentivized in a way that I can see leading to that outcome in our lifetimes.