The though experiment behind the butterfly effect is: Assume a weather simulation, which is extremely precise, but there's a butterfly, that flaps its wings, which is not accounted for in the simulation. This will, after a while, cause the simulation to divert so wildly from reality that its no better than chance at predicting the weather.
So applied to time travel, you'd come back to a world that is drastically different from the one you left, but not necessarily better or worse than the one you left.
You could sell the cure for a fortune. Imagine something that can reliably cure late stage cancers. You could charge a million for the treatment, easily.
Take a train. Even if trains are not available, those trips are rare enough, for average people, that renting a car for them is cheaper than buying.
haul a couch.
Unless you're a professional furniture mover, you're going to do this so rarely that it would be cheaper to just hire a professional furniture mover, than to buy a truck.
Also, all of these satellites need to be replaced if starlink is supposed to keep functioning. Costs will need to be placed on either the customer or the taxpayer.
The though experiment behind the butterfly effect is: Assume a weather simulation, which is extremely precise, but there's a butterfly, that flaps its wings, which is not accounted for in the simulation. This will, after a while, cause the simulation to divert so wildly from reality that its no better than chance at predicting the weather.
So applied to time travel, you'd come back to a world that is drastically different from the one you left, but not necessarily better or worse than the one you left.