How is esports and online racing the new norm and THE way to judge a game properly when only less than 15% of the player base on your platform are actually interested in MP (as you found out yourself already)?
But it's not 15% of who are still playing the game... I haven't seen stats for PC2, but when Kudos estimates 5.8M new players (purchasers) but only about 10% active players (not Sport Mode, but active in any way) remain after a year, you have to realize how few sustain interest in the game.
But of all the remaining players still playing, the Sport Mode numbers are far higher than the percentage when compared to initial release. So, as a title ages, the importance of the online component increases. SMS is a small studio, can't pump out new titles every year. So for longevity of the franchise, more esports is going to be important. Publicity will drum up interest, GTS's FIA finals were watched by millions! If you don't think that's not going to equate to sales not only for the next title, but sales for GTS until a new one comes out, you're crazy!
There are a significant number of purchasers (the majority, if the truth be told) who will never play online. But they are also the people that, if you make the game noob unfriendly (which, let's be frank, the last two games have been) won't come back. But the online hardcore will... As the franchise ages, the percentage of players buying the next game who are casual 'tryers' will slip. Something will need to fill that gap. And like it or hate it, that is going to be esports.
TBH, I wouldn't really mind SMS moving to a model like that, and yearly new games with only a bit extra content added. If it underwrote the bug fixing rather than a year's worth of bugfixes then being stuck with what's left unfixed for at LEAST another year (maybe two) before the next game, I'm all for it..!
But unless SMS can finally release a game that, right out of the box didn't scare off 80% of the players, those of us in the minority playing MP are going to start to be the majority even at release. How many times will the noobs come back to a game they binned quickly twice in a row?