I thought they made it pretty clear, I understood it like this: we are a blockchain technology company, we promise to make technology to keep your BTC save we won't inflate the 21M cap but we will extract and leverage the value kept in the blockchain, and for the miners, don't worry about the diminishing bitcoin block reward we've got something special for you, infinite fees and Merged Mining.
was that supposed to be funny.
here is Blockstream's activity description from the company's incorporation filling :
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Développeur cryptographique qui assure des infrastructures sécuritaires qui numérisent en toute sécurité les marchés, les actifs et l'avenir de l'égalité des possibilités économiques.
Roughly translated :
Quote
Cryptography developers building secure infrastructures that digitize markets, assets and the future of egalitarian economic alternatives/possibilities
btw if anyone is curious they incorporated back in February