Yes. If only because ARM cores mean you need to pay a licensing fee, often times, whereas the 8051, 6502, etc, tend to have significantly better royalty agreem

Yes. If only because ARM cores mean you need to pay a licensing fee, often times, whereas the 8051, 6502, etc, tend to have significantly better royalty agreements (in my understanding). Also, like the other post says, these aren't used for huge computational uses, it's more for really really basic stuff. You'd be amazed at the amount of chips that have an 8051 in them...