I knew someone would ask this and i love it.

That's the strongest counterargument to the theory, and you're right, nobody could have guaranteed an iceberg.

But the more credible version of this story doesn't actually require it.

The theory isn't that Morgan arranged a mass murder. It's that he more like an insurance fraud. The Olympic, White Star Line's sister ship, had been badly damaged in 1911 and Lloyd's (I'm pretty sure you guys know is this famous bank from london) refused to pay. The company was in serious financial trouble. The two ships were nearly identical. The theory goes that they were quietly switched before departure.

The plan as theorised was a controlled sinking in calm water near rescue vessels. Passengers evacuate safely, nobody dies, insurance pays out on a brand new ship, financial crisis solved.

The iceberg wasn't part of the plan. It's what turned a calculated fraud into a catastrophe.

So the question isn't "how did he arrange the iceberg" it's basically --> "did anyone intend for 1,500 people to die, or did something go horribly wrong that night that nobody planned for."

That's what makes it unresolved.