Do you think computing history would have been much different if Microsoft made a 6502 Pascal interpreter instead?
They didn't invent the language. BASIC was already a popular language for beginners on microcomputers at that time.
Except that wasn't possible. Languages like BASIC and Forth exist because they were the only kind of language implementable in 4K with no disk. Pascal in its smallest form (UCSD p-system) still needed disk overlays. The smallest C compilers were poly phase, needing storage for intermediate state.
Pascal is a lot broader language and won't fit in sub 16KB of ROM (even if you exclude monitor [call-151])