If those companies (Sony, HP, Dell, Gateway, ect...) do go the route of building those bitcoin PCI-e cards...
Um... ok I'll give you the benefit of the doubt for now...
First, could you please address those figures you threw out before?
Second, do you have any ref link for the supposed "those companies"? speficially Sony, HP, Dell?
Note: Bitcoin mining PCI-e cards are extremely easy to build.
If you are referring to GPUs as they are technically bitcoin mining PCI-e cards... why would these other companies bother with companies like AMD already around?
If you are referring to ASICs in a PCI-e form factor none exist as of yet so... again, not sure where you're getting your referece for your claim.