I don't think any YC startup would want to piss off PG with a template found somewhere online - most YC startups do have a clear landing page with call to action items and hardly . Likewise, I am sure that was the reasoning behind this TechStars website you've shared. Of course, I would assume that since they've only crossed the demo day chasm, they probably might've borrowed some elements from online for lack of a full-time designer perhaps.
http://replay.waybackmachine.org/19980509035420/http://www.a...
You will quickly notice a resemblance. It was proven unequivocally that the right hand large photo product placement with a bar of sub items below draws the most conversions. It has been replicated since then to where it has almost become an unspoken standard.
If I recall correctly, Apple spent a massive amount on researching this and pretty much eliminated any other conceivable layout as drawing a higher conversion rate for product sales + recollection branding; that was the big key, not only did it drive higher sales, but it also served as identity branding as well.
So you will see a lot of companies, that do their research, implementing this style page, if they are a product company. You will also see a lot of off the shelf templates that emulate it. There are countless Wordpress and Drupal themes that offer this layout.
A lot of this info is from memory from the 90's, so take it with a grain of salt. The high level info is sound, but I may have got some of the details backwards.