How have White Industries overcome this?
They haven't, they've just made the wear surfaces large enough that you won't notice the destruction of your hub until they have long since disappeared to their retirement homes with your money.
Also, while the White Industries splined cogs aren't a true interference fit, they're a very tight sliding fit.
@Brommers started
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They haven't, they've just made the wear surfaces large enough that you won't notice the destruction of your hub until they have long since disappeared to their retirement homes with your money.