Every Job has it's Con/s:

Digging - Crabs attack you
Car missions - Noobs attack you
Trash picking - Competing against other players and noobs attack you
Mushrooms - Competing against other players and noobs attack you
Flower picking - Noobs may attack you depending where you pick and the amount earned per flower is little.
Fishing - Requires Timing
Mining - The caves sometimes blow up.

Now, if such a feature was to be included for Pizza making it would make it the most efficient Job to earn money rapidly (it already is, if we don't take into account mining levels).
Essentially what you're asking for is a Buff to the Pizza making job and remove all setbacks to make it the best job in Era.