Bitcoin is a digital currency with good technology from cryptography, blockchain to make it secured and safe to use. Bitcoin has achieved its position today because it is a successful blockchain-based currency and a digital currency. If it is the same like other currencies, in physical formats or like fiat currencies, it would have not make any big difference.
Remember "avec des si on mettrait Paris en bouteille", means “with 'ifs' one could put Paris in a bottle”. [1]
[1] https://en.wiktionary.org/wiki/avec_des_si_on_mettrait_Paris_en_bouteille
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