Nobody was forced to do anything; migration started almost immediately after 1989-90, simply because the eastern economic and social landscape was depleted after the failures of the '80s. Delocalization took a bit longer simply because it required institutional stability, which some countries achieved faster than others. Volkswagen were already making parts in Chzechia in the mid-90s, do you think they were making twice the parts they needed...?

> basically admitting the plan has always been to keep those people poor

That's not what delocalization does; in the long run it inevitably leads to wage growth in target countries - it happened even in China. The "plan", or rather intuition of some political players of the time, was simply to exploit lower salaries as long as it was possible, knowing full well that it wouldn't be forever.

> What was initially sold as a continuation of the marshal plan has taken a very dark european shape.

As I said, nobody is forced to stay in. If those countries stay in, it's because they know which side their bread is buttered.