[MaxBarraclough]

To rephrase this then: your additional work may improve your product only a little, but it may be enough that it can now compete in the market. If it's a winner-takes-all market, a slight improvement in quality may be especially consequential.

edit I think this might model the success of Slack. Which chat program should we use? There are lots of free ones and they're all about the same, but Slack has slightly better polish than the rest and is easy to set up. Let's use that. If that conversation happens in tens of thousands of organisations, you take over the world.