WhatsApp launched in January of 2009 compared with Facebook Chat which launched in 2008. WhatsApp saw drastically wider adoption among the general populace and paying for “N text messages per month” is precisely what people refer to as paying per message - WhatsApp had unlimited messaging.
Is "Facebook Chat" not the same as "Facebook Messenger", the separate chat client? Because I seem to remember a lot of people using the chat built-in into Facebook (not Messenger) a lot earlier than the standalone app/client, maybe I misrecall.
> paying for “N text messages per month” is precisely what people refer to as paying per message
Maybe I said it wrong, "N text messages per month" for me means "Pay us 10 EUR per month, send up to 5000 messages" for example. Doesn't matter how many you send, you pay the same.
While "pay per message" is "Every text message you send, costs 0.01 EUR". Maybe I'm using the wrong words, but that's how I understand it.
Most of the people who were "texters" (in my circles) were on plans offering the first way of paying, while hardly anyone was doing it the second.
Another important part, was that most telecom's had free SMS and calls if you were with the same company (and still do, AFAIK), so constant bickering about what plan people are on and why they don't change so it's free and yadda yadda.
Many people were already mostly texting for free at this point.