Awarding the best young players to the worst teams creates an obvious problem. A lottery exists to break the direct link between losing and reward.
Reverse-order drafting creates a perverse incentive
If the team with the worst record automatically receives the first pick, a team already out of contention improves its future by losing its remaining games.
Nobody needs to instruct players to lose. Resting veterans, playing inexperienced lineups and trading productive players all serve the same end while remaining entirely defensible.
The result is a stretch of the season in which several teams are not trying to win, which damages the product for everyone watching it.
Randomisation weakens the link
A lottery assigns the top picks by weighted chance rather than by record. The worst team receives the best odds but no guarantee, so losing buys probability rather than a player.
Because the expected gain from one more defeat is now small, the marginal incentive to lose is reduced substantially even though the direction of the incentive is unchanged.
The system is a dampener rather than a cure, which is why its parameters have been revisited repeatedly.
Flattened odds spread the top chances
Giving the worst several teams identical or near-identical odds removes the benefit of finishing last rather than third from last.
That matters because the most damaging tanking happens between bad teams competing to be worse, not between a bad team and a good one.
Extending the lottery to more picks compounds the effect, since a team can now fall further than its record suggests and gains less certainty from a poor finish.
Team building still rewards patience
The lottery does not change the underlying reality that young talent acquired cheaply is the main route out of mediocrity for a team without market advantages.
A club stuck winning half its games occupies the worst position in the structure, too good for high picks and not good enough to contend, which is what makes a rebuild attractive.
Front offices therefore still choose to be bad deliberately. What the lottery changes is how long that choice takes to pay off and how uncertain the payoff is.
Draft pick trading spreads the effect
Because picks are traded years in advance, the incentive to lose can sit with a team that does not own its own pick, or with one that owns someone else's.
A team holding another club's protected pick has an interest in that club's results, which produces the strange situation of one organisation benefiting from another's failure.
Restrictions on how many consecutive future picks may be traded exist partly to keep these entanglements from becoming unmanageable.
