OP, along the same vein, Omega too had their share of issues when incorporating the Co-axial in their 2500, 3603 etc movements, which themselves utilised robust movements from ETA/Lemania/F. Piguet. There was a thread recently talking about some issues with the new 3861 movement!
I would counter with: ask yourself - how many movements does Seiko sell to its competition?
Lots. So because Seiko does it, everyone should? Is that the logic here? If so, it's not terribly convincing. Companies can decide for themselves how to market and sell their products.
My point is, although many other companies are far more restrictive than Swatch is, Swatch tends to be the one that gets beat on incessantly.
But carry on...
I would counter with: ask yourself - how many movements does Seiko sell to its competition?
I think the same could be said of your point, just because some companies don't, everyone shouldn't?
Companies can decide for themselves how to market and sell their products.
Rather I shouldn't assume but ask. What was the point of your Rolex question?
My point is, although many other companies are far more restrictive than Swatch is, Swatch tends to be the one that gets beat on incessantly.