I'll just toss out a few quick observations.
1. 25% is extremely high. In fact, 25% of gross (sales) is entirely impractical if the profit margin is less than that -- and it often is. A few decades ago when there were fewer patents on each product/process, I heard that 5-10% was not unreasonable. Now, I understand that 2% is considered very high. And, I think that was of profits, not gross, but I could be wrong.
I'm not suggesting that no one will ever get 25% of profits in a patent license. But, if you do, take it and run! And don't grumble and tell people you could have gotten more.
2. I think there's a huge difference between pointing out obstacles and raising obstacles. Don't blame the weather person (meteorologist) if it rains. It's good (great, even) to believe you can beat the odds, but you really ought to know what the odds are. Gambling is a tax on people who are bad at math.
3. I've said many times that patents are complex business tools. They're not cheap, and they're not easy to get. A clever idea is an opportunity, but no one is guaranteed the means to take full advantage of all opportunities they come across.
A while ago, I had heard that stocks (and the Dow Jones in particular) was down around 50%. I wanted to buy, buy, buy .... (you know, buy low, sell high, but everyone else seems to do the opposite). But, guess what. Since the economy was in the tank and I'm self-employed (and other things going on in my life at the time), I had no cash with which to buy, buy, buy.... I heard the other day that the market has regained 75% of its losses. (Forgive me if I'm wrong or mis-heard something -- not gonna look it up, but the anecdote is still illustrative).
That would have been an opportunity to gain 75% interest in one year!!! And, I saw it!! But, I didn't have the means to take advantage of it.
The same can happen with people with clever ideas without the means to bring the idea to reality themselves. I'm not saying that's the way it ought to be. That's just the way it is. The law just does not pave a clear and easy path from clever idea to profit. It just doesn't.
I've said this before and got blasted for it. I'm prepared to be blasted again. Lawyers don't make the law; they just help their clients navigate the law. If you want the law to be different, you don't need a lawyer; you need a lobbyist.
Of course, that's not to say lawyers are entirely powerless. Those who have read much of what I've written here know that I rail against many of the injustices I perceive in the practice as I see it. But, there's not much I can do but push and hope my pushing has some tiny effect somewhere. However, mostly, all my railing is much ado about nothing, a tale told by an idiot full of sound and fury and signifying nothing.
Regards.