Wouldn't the OBI press hit at a high rate of speed?
OBI's are generally faster than press brakes, atleast older ones.
Steel's max forming speed is 80 feet per minute. Depends on stroke obviously, but a typical 3" stroke press could run 200+ strokes per minute and be well under steel's maximum forming speed.
Here's the thing- To a press brake guy that's a press brake job. To a product guy that's a stamping press job.
In what I would consider a small-mid size stamping press (one that you can easily move with a 10K forklift) you can make that part in a simple tool in one hit and it will be perfect.
The flange-flange dimension is a non-issue. It's built into the tool.
To deal with material thickness variations you can add discreet or obvious features to coin the bend.
I'm probably getting way out there for 20 pcs a day, but this is how I do some of my stuff. I will spend a couple days building a simple soft tool and I'll run parts through it for a few hours once every few months or so.
I have a press brake. A close friend has 5 of them. I know how they work. When you have a long running part and can build a simple tool you can make hundreds, or thousands of parts in a short time with a stamping press VS the same parts over hours or days with a press brake.
Press brakes are versatile. Stamping presses are productive.