You don't have to pick one market from day one, but it usually speeds things up - search intent, payment methods, and licensing relevance all differ by country, so "neutral" content often ends up not ranking well for anyone specifically.
Two years with zero revenue is more of a positioning issue than a geo issue though. Worth checking GSC: are you getting real organic traffic with no conversions, or basically no traffic at all? Different problems, different fixes.
Switching markets later is doable, just adds some rework (payment methods, licensing mentions, some geo-relevant backlinks) - not a huge deal, just not instant.
Quick shortcut: whichever market already shows the most impressions in GSC, even a little, lean into that one first instead of guessing blind.
Dustin | CasinoInspector.net
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