Dr. Pym did not know whether he believed Harry, but judging by his reaction, he accepted the idea of using the Ant-Man suit to fight aliens.
However, there was no need for his Ant-Man suit right now.
Peter's shipboard AL had sent back Xandar's location and other data. As long as Harry wanted to, he could pilot a ship there himself.
But there was little point in going. He might end up being arrested by the Nova Corps too, unless he brought along a fleet capable of crippling them.
A strong fist was what truly mattered.
To accelerate development, they had to set their sights on off-world assets.
Although the Osborn Group already held a considerable position on Earth, its development there was still heavily restricted. As long as the Osborn Group remained entangled with the Earth Alliance nations, it would inevitably be constrained by the United Nations. That was dictated by Earth's "traditional laws."
Having Harry serve as a consultant for UNSC was already a major concession. Although the Osborn Group effectively possessed the means to contend with various nations, everyone simply understood that without saying it aloud.
If one day they became greedy for Harry's technology and joined forces to impose sanctions, he would still have to spend considerable effort dealing with it.
The Earth Alliance nations were probably already considering how to restrain the Osborn Group.
This Earth had a whole host of superheroes. Some would support the authorities, while some might not, but regardless of which side they stood on, none of them would support Harry in a conflict between the Osborn Group and the authorities.
Therefore, it was inevitable that the Osborn Group would bypass the Earth Alliance and directly develop outer space. The FTL engine was still little more than a legend on Earth.