My same response from 1000rr.net:
A spec tire rule are you kidding me? If you want to compete at this level you have to bring your best equipment and best mindset. Bridgestone has done the homework to be successful this season. I find it hard to believe Michelin with all its past success cannot provide competitive tires to their riders. A spec tire rule would only serve to line the pockets of a chosen company.
This is world championship prototype motorcycle racing, the fastest men on the fastest motorcycles. The only rules here should be in the interest of safety.
Right now the open tire rules only serve the interest of tire companies and don't serve the overall health of the series. When you have a tire war and a situation like we have now the ratings of the series drops off. Lower ratings equals less ad revenue and less sponsor value.
Lower ratings also means less favorable TV deals. So instead of getting same day coverage on Speed like we do now, we could be looking at watching the races on Tuesdays or not at all. Conversely, if the ratings for Moto GP were a lot better we could get pre-race, qualifying, and free practice coverage like Formula 1 does.
And that's not even getting into the more important issue of sponsorship. The 4 Japanese factory teams don't rely on sponsorship but Ducati most certainly does and so does all of the satellite teams. Without sponsorship you'll see teams drop off the grid and obviously we don't want to see that.
A lot of people are harping on this whole idea of a prototype racing championship but the fact of the matter is that Moto GP does not exist in a commercial vacuum. If you ignore the commercial side of things the championship dies. Even then, Moto GP is not a pure prototype series in the first place. Fairing design is limited, there's a minimum weight, engine displacement is limited, oval pistons aren't allowed, fuel is limited, and so on and so forth. I don't see anyone complaining about those things. If Moto GP were truly a prototype series with no rules the racing probably would be significantly worse.
At the end of the day people pay to see a race. I doubt 50,000 people would show up so they can see 20 riders do parade laps at speed with no passing.