"According to your numbers ..."
They're not my numbers. They're the numbers of the lotteries and the players, and you obviously didn't understand them.
When PB offers another jackpot that's over $1 billion we'll see if anything changes, but right now our best data comes from MM's more recent effort. They came up short, but they told players they were offering a jackpot of $1.6 billion. Not a measly $1.0 billion, but $1.6 billion. And how did players respond to that offer? By spending just $740 million on tickets. The total revenue wasn't enough to cover the actual, smaller, jackpot. When the previous drawing offered a jackpot of an even $1.0 billion sales were $560 million, or 56% of the advertised jackpot.
So let's suppose that the lotteries advertise a jackpot of an even billion dollars as a raffle. How much will players spend on tickets? If they'll bump the spending up to an even 60% of the advertised value that would be just enough to actually award the $1 billion prize (current rates would require 63%). That would leave zero for smaller prizes, which would almost certainly have a major impact on sales, making the 60% sales figure wildly unrealistic. More importantly it would leave zero profit for the lotteries. In fact it would leave them deep in the hole, because they'd have to pay perhaps $35 million in commissions to retailers and they'd have a bunch of other overhead to pay for.
In case it's another thing that you haven't considered, offering a guaranteed jackpot won't improve your chances of winning. If it takes 300 million $2 tickets just to generate enough revenue to raise the $600 million necessary to pay the jackpot prize the odds of winner are still 1 in 300 million. By the time you factor in a few smaller prizes and even a far more modest profit to the lotteries the chances of winning a $1 billion raffle prize are even worse than what players were offered with the current games.