I'm not sure where you're getting your information, but officials aren't getting rich off of this avocation, and especially not calling six man.
Current pay structure is based off the gross gate fee, plus travel, depending on how far you have to drive from your chapter's location. If the gross gate is $150-4,000, then the pay is $95. The vast majority of six-man games fall into this range. Travel is $20 if the drive is 1-30 miles, $35 if you drive 31-60 miles, and $50 if you drive 61-90 miles )above that, it's the IRS mileage rate). So at best, for a six-man game, I'll pull in $145. Plus gas. Plus grabbing something to eat (in my experience, if the home team loses, you're on your own; if they win, you might get a burger.) Plus time. If I'm the furthest band, that adds on average 1.25 - 1.5 hours of windshield time, each way.
And for a 7pm kickoff, I'm potentially leaving my house at 4:30, the game ends at 9, 30 min to get cleaned up, then drive home, and arrive around 11 pm if not later. That's potentially 7 hours of time. Not to mention time spent studying, cost of uniforms, attending meetings, etc.
As a side note - you can see what officials make in each sport for the next 10 years here, negotiated between TASO and UIL:
https://www.uiltexas.org/files/alignments/Sports_Officials_10_Year_Fee_Schedule.pdf
I am not a fan of this, because of what others have said - it locks us in, for a super low rate, forever. We no longer have leverage to use increased pay as a mechanism to attract more officials. So yeah, what's coming, will be Thur-Sat games for six-man, and subvarsity games will likely be covered by school staff or parents. It is what it is.
Second side note - officials pay being based off gross gate receipts is one of the two most corrupt practices in all of sports. It's incredibly common to have schools - 5 and 6a - pay the lowest band. They aren't required to provide proof of the gate receipts. I've worked one single game where I made more than the bare minimum and that was a playoff game. Only way to challenge it, is for officials to file a FOIA request to the school to see what was actually made. And when that happens, it's a given that the school/coaches are going to scratch you from future assignments... which leads into the second most corrupt practice - allowing coaches to pick officials. That's a whole other conversation, but there's literally no other level of sports, at any level, that allows coaches to pick who officiates their games. It is a corrupt practice and leads to officials soliciting, and coaches happily choosing the crews that give them calls so they get picked in the future. I've had a six-man coach tell me if I make a particular call against his team again, that he would make sure I didn't get selected for any playoff games. I did, because they did it again, and he did too. But, again, that's a topic for a different day.
Third side note - Outside what I mentioned above, I've rarely had problems with varsity or sub-varsity coaches or parents, except those that coach youth football. I've tossed at least 3 in the last three years, including one yesterday. I used to coach, even when my kid wasn't playing, and was always respectful to refs, even when I didn't get a call I wanted. Every year I help out with youth ball thinking it will be better this go around, and every year is exactly the same if not worse. So, if your kid is playing youth ball and you have to get on the field because officials refuse to work them, sorry not sorry.