If there is sufficient growth and economic diversity they can find different and hopefully better jobs.

Would you want a job as a copy clerk? These were people who copied documents by hand before copy machines were invented.

In a grow the pie worldview, let’s say the 20mm in supply chain costs means less WIP inventory and less shipping.

The WIP inventory reduction might come as a decrease in raw materials. Let whoever sold it to me sell to someone else.

The people transporting goods can transport for others. (Or they were overcharging)

Thats the whole point of the a capitalist environment!

Hopefully those people were paid well for their hard work and saved up enough money to retire or move onto bigger things.

"rip them"