It doesn't matter what the users think. However, the EU Commission agrees with you here, as it explicitly decided that iMessage doesn't fall under the DMA: https://ec.europa.eu/commission/presscorner/detail/en/ip_23_... ("gateway" is one of the three conditions to be a gatekeeper, see https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A... )