In your opinion, this may be true and possible, but this only happens if the platform is monopolistic for the currency and is the only one that provides it and is not available on any other platforms. There are also other factors such as trading volumes and storage.

$XRP

Peace be upon you
What is the reason for the drop in cryptocurrency prices today?
The reason is very simple and happens every time there is an increase, which is that the platforms try to liquidate futures contract holders because they know everything about their movements and they know that most of them are placing bets on rising prices with medium financial leverage, which is why we witnessed this decline.
And the only beneficiaries are the platforms.
Best regards.