When were you last in Portland, OR? I bounce between there and Seattle and I'd say Portland has at least as vibrant a tech/startup scene as Seattle, even if there isn't as much VC activity. It isn't just Intel and HP in Portland anymore either.
I actually currently live in The Pearl. I've found that the gap between DC and Portland, in terms of startup culture, is shocking.
Here is why I think Portland's startup/tech culture is lacking:
1.) In DC I had ~12 co-working spaces to choose from. All of which had both bull-pen and dedicated office space. One of the spaces I worked out of had ~10 startups with their own offices, and that was just at the single location in Arlington. At their other 3 locations they had just as many if not more. In Portland I maybe have 2 solid co-working spaces to choose from and as far as I know none of them are supporting any well known startups.
2. Meetups in Portland are very low key and don't draw very many attendees. I mean check out this meetup in DC[1]. It had close to 900 confirmed attendees. From experience I'd say at least 70% of those confirmed actually showed up. Portland on the other hand has only 70[2] confirmed attendees for a very similar event.
3. There's a lack of startup accelerators and incubation in Portland. PIEPDX seems to be the largest (and looks awesome). Nike moved FuleLab to SF this year[4] and everything else that I've researched seems to have closed down. In DC you have 1776[5], Acceleprise[6] and The Fort[7].
Perhaps comparing the two isn't fair as DC is a larger city. These are simply my observations as a person who has lived in both places.
It could also be that I'm just not looking in the right places. I know startups like Simple, Treehouse and New Relic are all in Portland, I just haven't seen any presence from them (be it at meetups or otherwise).
To be honest, one of the reasons I love living in Portland is because it's tech/startup culture is smaller than other cities. I'm excited to be part of it's growth.
But then again it's all relative. Someone coming from the bible belt might consider Portland to be a tech city.