Yes, that's why you cannot ever stop scalping. However I believe there's enough data for Valve to prioritise real customers, the first batches could be quietly sent that way.

I also don't think scalping is that big of an issue here, the lottery system is mainly to stop the first come, first serve FOMO and panic, rather than scalper protection. It's just blown out of proportion because the products are in high demand and low stock, so people wanna point fingers somewhere. There's never that many listings for scalped products versus how many are actually sold.

Valve's words about the lottery:

The longer timeframe also allows us to do some extra validation on the signups to make sure they're real accounts, with only one per household.

Hopefully they are taking more into account than we think.