Just wanting to play devil's advocate here - and appreciate everyone is different - but I think a lot of cases like this are very 'once you pop, you just can't stop'.
I used to be the biggest physical advocate ever - I bought hundreds of CDs every year, but once I switched to streaming, I wondered why I never made the move earlier. I realised how much time and money I was saving - and what I had once prioritised (ownership) now seemed like a hassle. Essentially, I'm trading the value of physical ownership for convenience (saving on shelf space and having instant access without having to download anything/import to itunes)
A few years later, I then made the same transition to eBooks/Kindle, for much the same reason - despite originally being all about owning and loving the feel of a physical book.
I'm not saying 'oh, if you've never tried it, you'll never understand' - but I think the shift we're seeing across so many forms of media is one that it's very easy to be resistant to in the here and now, but once you start to make the shift, your whole mindset shifts. Many of the problems the digital medium currently faces (eg. areas with poor internet access + what happens if a company goes out of business) will be solved as the market consolidates and poorer companies fold. This digital medium isn't just sitting still - it's still in a process of evolution.
I still buy loads of anime physically, because I have a collector's mindset and hate the idea of not being able to have something that then goes OOP. But if anime did go streaming-only - I'd probably be annoyed for a little while, but I don't think I'd shed that many tears in the long term. I know my wallet certainly wouldn't.