I don't know, even while the C64 was on sale Commodore had a lot of respect in the business world. The PET was so sought after that Jack increased the prices to maximise his profit.
I'm not really sure in America what went wrong, all you lot seemed to buy was a rubbish EGA PC instead of Amiga 1000s and well even worse Mac 128k or horror of horrors that child's toy the NES.
Atari I could understand getting hassle from corporate side for the name and its connotations but Commodore before the A500/2000 still had willing corporate customers.
Commodore had stopped pushing PETs for business around the time of the VIC-20 due to the idea they had that they could not supply support on the level that Fortune 500 companies required which they would get from companies like IBM who were used to dealing with those level of companies. Thats 'what went wrong' in America.
The idea was they would make the money in the consumer market to build the support structure required to deal with companies at that level then go back into the Business market but the people laying those plans left Commodore well before the Amiga, when they had a computer that could have done very well in Business again.
That the PET sold so well in America gave Commodore the idea that they had priced it too low and caused them to release it at a higher price in Europe.
Its true the Amiga was a lot better oriented to compete in business than the Atari especially once the 2000 came out. But Commodore lost the business name having so long not really pushed a 'business' computer and never really made the case to businesses as to what an Amiga could do for them and their productivity. Remember, no one knew what Multitasking could do back then since neither the PC most people had nor Mac could do it.