And there's nothing stopping people from printing their own ticket. This is what I already do with e-tickets, since I don't always trust my phone.
This does not replace gdb. It takes gdb - which is an extremely powerful, but also rather low-level debugger - and provides a high-level, simpler, but more convenient UI around it. Under the hood, it still talks to gdb.
This is similar to how VC++ native debugger relates to dbg/windbg. The former is more high-level and easier to use, but the latter is more powerful and lets you do crazy things.
It does use gcc.
You're missing it because you're considering it from your perspective. There are many C++ developers out there for whom the primary platform is Windows, but they increasingly need to also target OS X, Linux, Android etc. This makes it easy for them to continue using Visual Studio on their machines, while building, running and debugging code on those other systems.
Another feature like that is Windows Subsystem for Linux. You wouldn't care about it if you live in Linux land entirely, but if you have Windows code that you need to port, it's awesome.
Microsoft does have a different product that does target developers on Linux and OS X specifically: VSCode. It has C++ support, among many other things, and it's free and open source. It's also much more lightweight than Eclipse or NetBeans.
If you only care about Linux, you're not the target audience.
The debugger code is open source:
You don't win a war from the position of weakness, regardless of your strategy.
I'm sorry, but they don't.
Footlong Oven Roasted Chicken = 6.75. This is big enough for two meals.
Chick Fil A Grilled chicken Sandwich only - $4.25. This uses real meat, but you'd need to buy two to last you the two meals the sub lasts you, so $8.50.
So no, you're not paying more. The sub will fill you up exactly the same for 20% less cash. You also get vastly more veggie options than "just" lettuce tomato abd pickles.
Also, people complain about "no flavor," but that's why they have a dozen different sauces.
There is a country that does in a pretty similar way, complete with shall-issue concealed carry of handguns. It's Czech Republic.
Now look at its crime stats and compare to US.
Indians are Caucasian, by the way.
Not according to the Supreme Court of the United States.
How can you do 'New Math' problems with an 'Old Math' mind? -- Charles Schulz