A developing country can substantially increase its economic growth if its businesspeople are willing to invest in modern industries that have not yet been pursued there.
Statements
weak conditional (if X, Y can occur)
Businesspeople willing developing country to invest in 'new' → can increase econ modern industries growth a lot
pivot (But)
Being the first to invest in a 'new' industry is very risky, and there's not a lot of incentive to take this risk.
causal / conditional (Since / if)
'New' business → many others will invest in succeeds similar, diluting profits
Evaluate
Usually when we see a big Pivot word in an Inference paragraph, we want to Reconcile the Pivot, meaning figure out what the net effect is of combining what came before it with what came after.
The first sentence is saying that a country could economically benefit a lot if businesspeople were willing to invest in 'new' modern industries. But, businesspeople won't want to invest in such industries because it's a big risk without the promise of big rewards (success in that industry would result in other people diluting the profits of the risk-taker).
Goal
If we were trying to synthesize that, we might say something like, .
It's hard to predict any specific wording, but the correct answer will likely connect "boosting the economy of a developing country" to "carrying unpalatable risk to investors", since the Overlapping Idea connecting those two things is "investing in modern industries".