Sorry but I think the guy sounded sincere. He referenced other big companies that had wanted to buy them. If they'd held an auction I am sure they could have gotten more cash if money was all that mattered to them.
Unless the news comes out that they were being pressured by their VC's to sell I think its correct to assume they figured that selling to SalesForce would help them advance their goals faster.
I dunno. I think this was all about the money. Anyone that's spent ANY time with SFDC knows it's not a great company to deal with as an outside developer.
I agree that the developer experience with Salesforce is poor. But this means that Heroku now has the opportunity to make that developer experience _much_ better.
Unless the news comes out that they were being pressured by their VC's to sell I think its correct to assume they figured that selling to SalesForce would help them advance their goals faster.