Not sure why the other reply says there wasn't... I definitely remember speculation that .com shares were a bubble, even in the mainstream (UK) media. Admitted

Not sure why the other reply says there wasn't... I definitely remember speculation that .com shares were a bubble, even in the mainstream (UK) media. Admittedly, the speculation that crypto currencies are a bubble does seem even stronger, but personally I don't find that surprising: it did seem feasible that .com companies could coexist, whereas crypto currencies seem to be offering the same product.