I would say the problems Blockbuster had mirrored the problems the author of the article implied, but for different reasons.
Retailers think of technology as a pure cost center: The products on their shelves are what the customers want; having the physical location and the right products in your inventory are enough. Technology is for operational things like cash registers and warehouse systems, and you don't upgrade any of them before your business plan says so.
Entertainment companies have to think differently about technology. Their product is intellectual property, and as technology evolves, so do the way customers interact with their product. This is nothing new - entertainment companies have had to adapt to FM radio, broadcast TV, color TV, cable TV, HD video, VHS, DVD, etc. But distribution has always been tightly controlled, and technology is a key component of this. So entertainment companies in general are pretty forward-looking in a technology sense - at least moreso than retailers.
In retail, the general customer interaction hasn't changed in a long time (or rather, in 1998 it hadn't changed fundamentally since the advent of credit cards). So the thought that technology could revolutionize the customer experience hadn't even crossed their minds. They had DVDs and VHS tapes - physical goods that they sold. But the product in entertainment is NOT physical, it's the intellectual property: and the retail guys never understood that. Once the consumers realized that, it was game over, man.
Realistically, there was probably very little Blockbuster could have done to challenge Netflix. Netflix was lean and able to move fast - Blockbuster was tied to an aging and slow-moving brick and mortar retail business. Even if Blockbuster had tried to close all their stores and move to a Netflix model, it's ridiculously hard for a large company to disrupt itself. Politically, you'll have a lot of resistance from within and meddling by the "old guard" to make sure the new "disruptive" product isn't going to be good enough to make them obsolete. There is also just a lot of capital overhead involved in running a retail business - obstacles that Netflix didn't have.