Imagine you only have a rock. A rock can be used for many things. You can use it to open a can, you can use it to smash things, you can use it to drive a nail

Imagine you only have a rock. A rock can be used for many things. You can use it to open a can, you can use it to smash things, you can use it to drive a nail. Then someone invents a hammer. You no longer use a rock for driving nails. Then someone invents a can opener. You no longer use a rock for opening cans. Then someone invents gigantic sledge hammers. You no longer use a rock to smash things. Languages definitely have competitors. Java took a lot of projects that would have otherwise been written in C++. Rust will take a lot of projects that would have otherwise been written in C or C++, but languages like Java weren't suitable for. Eventually, those two languages might be completely supplanted (but it would take a very long time). Because they lost to competitors in each space.