Sure, this pricing model might work, but it'll still turn away people compared to right now. News that happened a few months ago isn't interesting anymore. Most people aren't going to read that. This essentially means that the section of people that can't afford the $1 price tag won't read your articles, unless they're researching some story later.

A lot of what we have online just isn't viable on pricing models like this. The main divide you'll see is likely by country due to wealth differences.