1. Music - Free with ads or free with expiration date?

    As far as I can see, there are two models:

    1. Annoy your free subscriber with ads, forever
    2. Keep the service free for a limited time, then count on the natural number of conversions when you will ask for a subscription fee; freebie hunters will leave for another service with the same model

    Only time will tell what is the best. Anyway, music will continue to be free for some users

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