Tabs plus sheet music, synced with original source recordings, with the web's best learning/practice features.
Example: https://www.soundslice.com/slices/txqfc/
It's a "BYOM" (bring your own music) situation as opposed to a library like Ultimate Guitar. But it's reasonably easy to import stuff. You can import a Guitar Pro file from Ultimate Guitar, Songsterr or wherever — our MusicXML and GP importers are excellent, seasoned by nearly a decade's worth of development and edge cases.
We've also recently launched a PDF/photo scanner, using machine learning to extract the musical semantics (in case you have some music on paper or in PDF). https://www.soundslice.com/sheet-music-scanner/
We've also got a full-featured notation/tab editor, and lots of musicians use it for transcribing source recordings. https://www.soundslice.com/transcribe/
Also relevant: we've never had ads, we've never taken funding and we've been profitable for years. Sustainable, product-driven and musician-first.
When it comes to my job, I believe in doing your best possible work, being professional and acting in good faith. I expect to be paid fairly and treated with respect. If this relationship is mutually beneficial, it can go on for a long while. But it's important to remember that, as soon as it stops being beneficial to one party, it will be unilaterally rescinded.
I don't disagree with what you're getting at, just understand that loyalty is a necessity to a lot of folks, and I don't think it is because their values are misplaced.