When earnings have increased by more than an order of magnitude without a corresponding increase in maintenance and outfitting options, obviously you are left with an issue.
If earnings had stayed in the region of ~50k/hour for a sidewider up to ~3 million/hour in a Cutter then all but the most established of players would still be scrimping and saving to afford what they want, while the newer players would still be able to work their way up to ships like the Hauler and Eagle in reasonable time before following through with the Cobra and all but the richest players would be seen making use of E and C rated modules for economic reasons. Sure, you would get impatient players complaining about how difficult it is to afford a top-end ship, but those people are going to complain unless the entire game is trivialised easy mode; better off leaving the top-end for dedicated and long-term players and as aspirational content for newer ones.
As it currently stands, credit earning is completely out of whack, with some activities offering absurd income rates while others languish in poverty, some activities scale hard with ship type while others are almost completely agnostic with regards to ship choice, some require extensive player knowledge and input while others are just a few clicks away on one of the many ED databases for maximum earning potential. As well as worrying about income rates at the top end, income needs to be balanced properly with regards to activity, ship/outfitting and player ability.
If/when FD actually balance profits properly, then we probably need to see some kind of inflation on ship and module prices to match whatever the new rate of income is and to devalue existing treasure hoards. Something like a 5x, 10x or even higher increase to all ship and module prices depending on the final income rates settled on, including affecting existing assets (to affect rebuys and repair costs, not affecting resale value though), performed without any warning or leaked rumours to prevent players from investing in ships and modules beforehand.