just give it some time a lot of storm players are still playing storm 4 bc you know how the game turned out but the end is near we are getting new characters every 2 months and balance patches with it there is a rumor even about a second season after we get boru/kawashiki so yeah eventually specially if the game gets a discount like storm 4 did (10usd) most of the players will switch over

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Im playing on Switch!! Join!

Fun fact, CC2 already knows how to program crossplay in there games. Jojo all star battle has cross-play between xbox and pc only in the Microsoft store ver not the steam ver.
Storm connections on ps4 and 5 have cross-play, ffs. the only reason they don't wanna add cross-play is because its just way to pricey to add it. Not to mention they removed easy cheat from this game, there last game had anti cheat and the lack of anti cheat could lead to more issue than crossplay.