[fian]

The whole idea of potentially unpleasant or not consumable (due to allergies) output is a problem for me. The waste in time, work and resources to output something that has a high likelihood to be discarded (pizza is perishable) isn't something that should be encouraged. Especially when there are steps the service provider could take with minimal effort to avoid that outcome.

Typically with roulette there is a substantial upside to winning as well (large payout at casino for example). What is great thing you get by winning pizza roulette? A pizza that you could simply have ordered at no risk?

[ianai]

If anything this has a severely negative downside for dominos/the pizza vendor with “business as usual” as an upside. Doesn’t seem like something they’d like.