Isn't the point of an IPO generally to raise funds? In this case, it's just allowing people to sell their shares to the public, right? From the company standpoint, this is almost certainly a negative: additional oversight & reporting to do, no funds raised. I guess a positive is that shareholders can cash out, but as an investor, isn't that a giant red flag?

I guess as an investor, I don't see why I'd buy Spotify shares from an existing shareholder -- my "investment" is not going to the company, it's a bit like buying shares on the market of a mature company, except Spotify isn't that -- it's a money-hole with a highly questionable future. Is there any reason for someone to buy existing shares to expect things to turn around? They aren't getting a capital infusion, it's business as usual except with the additional burden of being a public company.