Not all business involve gambling. For example, consider Boiler Section of
BHEL, they have backlog orders of few years.There the objective is clear
to clear orders.No gamling.
On the other hand ,take example of Scientists in ONGC.They have given
task of identifying OIL.They in turn give probable STRUCTURES favourable
for oil accumulation ,after studying different indicatators.Of course ,nobody
knows 1.5km inside the Earth and confirmed by drilling only.It can be DRY,
GAS or OIL.But they are not gamblers.