The service was going to close because it wasn't profitable for them anymore, probably they were losing money big time.
Roger Ver can do only two things, burn money to keep it running like it is in order to gain promotion for his other ventures or find a way to drastically reduce costs, nothing dramatically will change, if their way of earning is flawed you simply won't be making money out of it.
Probably some from Column A and some from Column B.
They have an office in high-rent San Francisco, with 17 employees. They last raised seed money in 2016. They have probably never turned much profit, and have now burned through their venture capital.
If the company were stripped down to the bare bones -- and with the added value Roger Ver will get from promoting BCH or his other ventures -- perhaps an acquisition makes sense. I don't know anyone else besides Roger Ver who has the money and unique incentives to make it worth it. I don't personally see much of a future for Purse.io, but I'm no business guru.