A huge, 2-decades gap. Way too late, because in the meantime, Turbo Pascal had been developed and made the language practical (and btw I'm still impressed by the quality of TP's "IDE" for the time), and in 1990 you had several competing standards that split the community, between original "academic" Pascal, Turbo Pascal, Object Pascal, ISO Pascal, and a little later Delphi. Add that to the fact Wirth himself had lost interest in the language for a long time and had developed several better ones (Modula-2 indeed, Oberon too).