Weapons like the CLU-97 and the BLU-82 already exist in the US inventory.Would it be more cost-effective for the US to employ a mass fires solution in lieu of swarms of PGMs in some scenarios? I was unaware of the following engagement but the Russians apparently employed thermobaric weapons to good effect.
How the Pentagon is Preparing for a Tank War With Russia - Defense One
Munitions have advanced incredibly since then. One of the most terrifying weapons that the Russians are using on the battlefield are thermobaric warheads, weapons that are composed almost entirely of fuel and burn longer and with more intensity than other types of munitions.
“In a 3-minute period…a Russian fire strike wiped out two mechanized battalions [with] a combination of top-attack munitions and thermobaric warheads,” said Karber. “If you have not experienced or seen the effects of thermobaric warheads, start taking a hard look. They might soon be coming to a theater near you.”
Personally, I think the more interesting question to ask is "can a single F35 achieve massed fires effect without carrying the aforementioned munitions"