People in the know do post here and on other boards and we do know that SW:GE went about $600MM over budget per park, We don't know how much of that is ROTR but read the tea leaves - everything else opened on time or early vs Disney's announced dates, this is still requiring daily troubleshooting.
The build going over budget is a totally different issue than ongoing park earnings.
Also many other Disney rides have downtime, all the time. I don't think the troubleshooting this ride has to go through, is that extraordinarily expensive compared to the other rides even though it's a more complex system overall.
In fact because this ride is trackless, over time it probably has lower ongoing maintenance issues because they can easily pull individual cars out of service. What happens if the primary track dies in Pirates or Haunted Mansion? Not going to be working out of that one with an hour reset.
Other insiders have noted that attendance has barely budged at DHS, while at DLP it appears thousands of APs are leaving right after park opening every day (either to go to work and come back just for their ride later or because they didn't get a BG); they will count in attendance but Disney isn't getting extra $$ from them that day.
You even said either because they didn't get in, or to come back later.
The ones coming back later, will also spend money.
But even just the morning crowds are spending a ton on food and drinks.
Just from everything I have seen in person at the parks there is no way this whole new ride is not driving more sales for Disney, and in particular the boarding group system is helping that by allowing you to shop/eat when you would otherwise be waiting in line.
The good news is next Tuesday Disney reports earnings and the 2 things I am certain they will be drilled on ad nauseam by the big investors are Theme Park attendance and Disney+.
I predict pretty good reports from both areas.