Question is if both states, under regulatory capture, will allow any similar law to pass. I dare say that NCAA sports are bigger business in Texas and Florida by percent when compared to California, which has other very profitable industries. Thus the college boards have a far deeper connection to the legislature. So in a prisoners dilemma, either both of them can choose not to pass similar legislation, keeping the money out of the hands of athletes, or either state will pass similar legislation in order to complete with California for athletes. The other state would have to follow to compete for athletes, forcing the NCAA's hand to go with option 3.
Actually, currently, P5 schools lose money on the other schools in college football. The D0, in my mind, is not so much about California, as it is about evening out the chances of all the P5 schools. Right now you have to pay to play all these low level schools, which for a lot of P5 schools really does eat into profits. Additionally, in the current structure, the SEC for instance might play FCS teams and then fewer conference foes. This makes an uneven playing field for the BIG 12 or PAC 12 or what have you. So if you want a more even shot at one of the big 4 slots, you have to either pay out more money to play an extra low level school, or get the SEC to play an extra conference game. It's a bit more complex than that, because for instance OSU has plenty of money, but the conference won't let them play an additional cupcake. But you get the idea.
Now I'd bet a lot of the AD's would never actually admit it, but D0 is probably an attempt to tilt the scales in their direction by eliminating these, and other, structural impediments to their own success.
Currently P5 programs choose to play FCS opponents because they make so much revenue on home games that it is worth paying an FCS team a few million. The reason the math works is that the TV deals are already set, and the only incremental money they can make is through ticket sales to 100k fans.
Right now there are three divisions, and they are based on school size, which is why all the big schools are division 1 but there is a big difference in quality. The idea here is to take the top teams and split off regardless of school size.
P5 == Power 5. These are the five conferences that have almost all the top teams. Big ten, Big 12, the ACC, the Pac-12, and the SEC.
G5 == Group of 5. These are there conferences with the lesser know teams. American, Conference USA, Mid-American, Mountain West, and Sun Belt
The g5 and p5 are media constructs (not official) designations to help with ratings and assign teams to various invitational competitions like the college football playoffs.
I believe the NCAA will go with option 4, then once more states pass the same laws, eventually go to option 3.*
D0 is not really on the table because it is dilutive to 'P5' school earnings vs today's system of pretending to include G5 while excluding them from the big payouts.
*The reason they will go with option 4 is that the only conference impacted by the law will be the Pac 12. While Larry Scott (Pac 12 commissioner) is probably not happy, he can't really move the needle for the NCAA like Big10/SEC could. If this law get enacted in Florida, that would be the tipping point to go to option 3. Going with option 4 today really only leaves the Rose Bowl as the only loose end.