Many games that come out still, and are quite successful, do not require such technologies.
1. Indy developer releases a game or trailer of a game. 2. Within an extremely short time (days to weeks at most) there are clones on the market. 3. These games often outperform the original.
It's absolutely not something that's gone on for ages.
It might be a novel gameplay idea / twist on a genre, and mere days after launch instead of being able to stand on its own and gather attention it's drowning in a pool of lookalikes. It's no longer distinct.
The speed of being able to slop together something like this is less than 1% of what it used to be.
So yes maybe it happens more often now, but it’s still not new.