Doubt it - the Pak-US relationship always has had its ebbs and flows. The Pakistanis seem joyous at recent developments - but the USA has a habit of bursting the Pakistani balloon sooner rather than later. The crux is business interests - American firms have no major business interests in Pakistan - so no lobby pushing them to act favorably once the American work is done.
I think you couldn't be more wrong. My response will not be exhaustive because there have books written focusing on the history of US-Pak interdependence, however, here is a very brief response.
You conveniently gloss over the fact that the US or any industrialized nation, frankly, would be crazy NOT to have business interests in the world's sixth most populous nation! You forget also, the fact that Pakistan is not just a country but the only viable gateway to dozens of millions more people in one of the most geostrategically important regions in the world. And of course, you neglect the recent history of US economic interests, including one of the major reasons why the US became anti-Taliban... UNOCAL... pipeline deals anyone?
I don't know where you get your information from, but driving around on the streets of Pakistan I see Bank of America, Citibank, McDonalds, KFC, GNC, Pizza Hutt, Subway, Pepsi, Coke, General Electric and an unending list of premier American companies doing amazingly well, growing in leaps and bounds.
Without Pakistan, there is no development in Afghanistan, no transformation of that country into a US client, and no transit of dozens of billions of dollars worth of supplies sent by US companies. Without Pakistan, there is no Central Asian pipeline opening in the warm waters of the Arabian Sea... the US needs this energy.
Pakistan's Saindak mine, Thar coal, gas reserves and other mineral and energy assets offer hundreds of billions of dollars of opportunity to global companies. The $5B Khalifa refinery is just one small example. There are two other refineries currently under construction. There are multiple energy projects focused on using Thar reserves that are already under construction... for whom do you think these programs create economic opportunities?
Finally, please never forget that whatever non-local businesses do operate in India, they do so because relations between Pakistan and India are relatively non-violent at the moment. In the event that things took a turn for the worst between India and Pakistan, businesses in India will also be impacted. The chairman of GE played a role in defusing one of the past Pakistan-India crises... there was a reason for that...