Re: It is all about the taxes
"The state of Oregon put a .57% tax on gross sales for businesses with over $1m in sales" .
Intel will only directly pay that tax on sales to customers in Oregon. Intel's suppliers to their Oregon sites will also be paying this tax on the payments they receive from Intel, so I imagine those suppliers may raise their prices, so it could be like an indirect sales tax to Intel. But Oregon has no regular sales tax, so 0.57% does not compare that unfavorably to states with regular/actual sales taxes.
Source:
https://www.oregon.gov/dor/programs/businesses/Pages/CAT/CATFAQ.aspx
"For example, the following items are excluded:
<...>
Sales of items or services that are delivered outside of Oregon "