Nah, this is how Christianity took over the Roman Empire:
341 AD – Sacrifices forbidden, temples not to be visited.
356 AD – Sacrifice declared a capital crime.
381 AD – Sacrifices forbidden, but temples could be maintained as buildings.
391 AD – Public sacrifices, visiting temples, and keeping household idols forbidden.
392 AD – Comprehensive prohibition: sacrifices, incense burning, garlands, any form of worship at shrines or images outlawed.
399 AD – Pagan temples to be closed, images removed, cult objects destroyed, but structures preserved for public use.
408 AD – Any pagan sacrifices or worship considered sacrilegium (high crime).
423 AD – “Pagans” explicitly named as criminals; though if they repent, they may be spared punishment.
438 AD – Codex Theodosianus compiled, preserving all prior anti-pagan legislation.
529 AD – Forbids all pagan cults, astrology, divination, sacrifices; pagans excluded from public office and military service. Novellae 37, 45, 146 – Explicitly ban pagan teaching, rites, and gatherings; pagans not allowed to inherit unless they convert.
529–534 AD – Closure of the Platonic Academy in Athens (often dated 529), ending formal pagan philosophy schools. Paganism declared outright illegal; practitioners faced confiscation of property, exile, or worse.
You didn’t win over the competition. You outlawed it because you couldn’t win them over by argument alone.