That could be said for PC gaming too then because big software houses with AAA titles get most of the revenue obviously with their massive marketing campaigns that poor solo indie developers as well as tiny and small to average software houses just can’t afford.
And for the consoles market most indie developers can’t afford the publishing fees to just sign up until having got some profit out of either just the first one or a few games depending on luck with sales.
Most indies will always be the small fish in the water full of big sharks. But if no one succeeded in making money the whole indie market would have collapsed many years ago already. If more and more people start the indie adventure either solo or with creating a tiny business to enter the market then it means that it is still possible to make money. Real revenues and profits data is not public, some stats are public to let people get a clue about what is a success and what is not but a few developers complaining on some forums on the 'net, not talking about this one but others, don’t make the truth, also there is absolutely no proof about who is speaking the truth about revenues and profits and who is not. But if the market was impossible for indies then indies would have disappeared, no one would keep using Unity, UE4 and other 3D engines to make games, no one would make apps of any kind either. Not all mobile apps are made by big software houses, far from that.