I have a feeling that running x86 Windows will be possible, but it could take at least a couple years. And even when it is possible, it's going to be for very casual use cases. I am more interested in the SoC's that come out *after* M1, since M1 is really just to get Apple's foot in the door and target the lower-end of the spectrum for cheaper laptops.
If your goal is to run the occasional legacy Windows app out of nostalgia or necessity, it'll be possible, but don't expect to have anything near the raw performance today of running Bootcamp directly on bare hardware. Even if Apple releases some really killer SoC's that rival the likes of the Core i9, so much overhead is going to be involved in the virtualization that it'll be a major performance hit.
If you're a gamer, I'll put it this way: Imagine trying to emulate a Playstation 3, a PowerPC-based system that came out over a decade ago, even on modern and powerful x86 hardware. Videos are out there of people accomplishing it, but the frame rates are still unplayable. Imagine AAA games for Windows today taking 10+ years to run smoothly on Apple Silicon (assuming they never get a native ARM port).
Food for thought. For some Windows-related use cases, an Intel Mac is most definitely a good investment, even right now, and will be for years down the road. Also bear in mind Intel Macs support eGPU's, and even if drivers stop getting made at the Mac side as the latest and greatest graphics cards come out, Windows will work fine with those for years and years. It might be a bit of a niche use case, but still compelling enough to make an Intel Mac a very good investment today.