Then why do so many companies spend so much money buying ARM cores, they have the ISA (more or less) and the compiler, why doesn’t every chip design company mak

Then why do so many companies spend so much money buying ARM cores, they have the ISA (more or less) and the compiler, why doesn’t every chip design company make their own processor? I know for a fact that some companies that had their own line of ARM competition ended up using ARM in the end