That doesn't change the size of the market.
That is, unless you think the quality or features are so good that it will increase the size of the market. In that sense, I don't think RG is groundbreaking enough IMO.
Songmeanings has been around for over a decade. If the market demand was really there ($15mm investment worth), they would naturally gotten some funding, or enough revenue, to improve their product and soak the $ potential out of the market.
Currently we are talking to a group which is very promising. Can't say much more, but hopefully we can in the near future.
That's a huge market and with RG's excellent execution so far (everyone has missteps - remember that), it warrants a $15m bet.
For example, Rdio tried to do Vdio with video and look how that turned out.
Off the top of my head, I can't even think of one company that expanded to different categories successfully. It's difficult and really rare.
I can. Here are three: Salesforce. Amazon. Google.
I think if anything, the fact that they are funded and need to produce positive ROI for their investment creates incentive to "grow at all costs". However, the cost has been too great.
My suspicion is that the vast majority of people who search for lyrics don't care about song meanings or annotations. Azlyrics does just fine, which is why they've always been at the top. If people wanted song meanings they would search for song meanings.
My theory is that RG wasn't able to grow as fast as they hoped and have to resort to these methods. How else can RG justify a $15 million investment? Their biggest competitor, songmeanings.com, is bootstrapped with only a couple employees, which shows the true market size of the song meanings / annotations market.
Remember that most consumers want things that are insanely simple and give them immediate satisfaction. I'm not surprised that most people on HN think otherwise as they tend to be deeper thinkers than the average consumer.