The problem comes in when the necromancers promise skeletons for manual labor stuff to make society better, then they take public funding and ultimately the skeletons start making soulless derivative art and writing plays/stories that barely (or don’t) make sense.

Without going into homebrew or Wish territory (as the former is table-dependent and the latter is DM-dependent), Finger of Death creates an undead that is permanently under your command.

Being a 6th level spell, a 20th level caster can cast it six times per day (by spending all their higher level slots casting that spell exclusively), which means that, provided you have a steady supply of humanoids to cast the spell on, you could have six undeads per day, or 180 per month. In a year, that’s 2190 undeads, which is itself a small army. Give it some time, and you’d have a small country following your commands.

At that point there are only two problems: time itself (which can be solved with features that increase your lifespan, such as Boon of Immortality), and other people trying to stop you (which can be solved by using your spell slots to make them regret their decision).

Without going into homebrew or Wish territory (as the former is table-dependent and the latter is DM-dependent), Finger of Death creates an undead that is permanently under your command.

Being a 6th level spell, a 20th level caster can cast it six times per day (by spending all their higher level slots casting that spell exclusively), which means that, provided you have a steady supply of humanoids to cast the spell on, you could have six undeads per day, or 180 per month. In a year, that’s 2190 undeads, which is itself a small army. Give it some time, and you’d have a small country following your commands.

At that point there are only two problems: time itself (which can be solved with features that increase your lifespan, such as Boon of Immortality), and other people trying to stop you (which can be solved by using your spell slots to make them regret their decision).

I did list that, but doing the math is helpful. This is less useful for labor, but you could use executions or assisted suicide. If aging in their universe is anything like ours, I imagine there’d be no shortage of good people who’d rather go to heaven and donate their money to charity than spend it supporting themselves as they slowly and painfully die, but even in 3.5 where there were downsides to old age, the worst it got was +3 wisdom and -6 strength. Commoner was a class, so they’d roll ability scores and someone could have a Strength of 4, but they could also level up and improve their ability scores.

The other problem is that they’re making zombies, not skeletons, and there’s no rule that zombies decay into skeletons or anything like that. Though I suppose if we’re playing RAW, there’s no rule that zombies decay at all or are unsanitary.

You have to be a really good capitalist. If anyone could do that, they’d bid up the price of employees until the companies can barely turn a profit. And at that point, the skeletons barely help.

Depends on how many high-level necromancers are there who can provide skelettons.

If you can make ten times the employee’s pay, then human employees vs skeletons is just a question of 10% of your income. But high-level necromancers are going to be more expensive than just paying commoners.

Maybe skeletons can have some benefit over a regular human employee. For example, you don’t have to worry about workplace safety. If they get crushed, well, just summon another tomorrow. There’s no risk of them unionising or revolting. They will not abandon you for an employer who does care whether they live or not. You can use them to do all the gross and dangerous stuff where you’d actually have to pay humans more to do it. They don’t slack off, they don’t need breaks, they don’t need sleep.

I think it would be possible to capitalize on that.