Today, in the photo world the tech gurus are predicting the death of the DSLR and saying the future will be mirrorless interchangeable lens cameras. But, to me, these seem like laptops. Too big to be truly portable, overpriced and with too many compromises to truly replace a DSLR.
I strongly suspect that in five years, the tech gurus will have moved on to the next big thing. Mirrorless will have run its course and the DSLR will still be plugging away because the form factor that has worked for 75 years remains the best form factor for its purpose.
I don't think you're correct on this ML prediction.
If you've tried a Olympus EM1 you'll see just how responsive and useful a good ML-EVF system can be and the tech's got some legs yet.
I don't think ML will "run its course." It will become an alternative to the traditional SLR type camera body. Each will have their pros and cons and appeal to different consumer segments.
All the MFT cameras and Fuji's higher end bodies are proving they're very capable already. It will only be a matter of another generation or 2 before they will likely outperform even the best DSLRs for shooting speed, both AF and fps.
Higher frame-rate EVFs with higher resolution will surely arrive though they're already adequate to rival optical VFs for functionality. Battery drain will be improved, extending their operating duration. These advances may even arrive from the traditional SLR mfrs first. I'm sure they can see the foreshadowing such technology is having on them. PentNikCan have already ventured into ML categories, not very successfully, but they've gotten their toes wet and will have to continue and may even have to get competitive, at least in their own way, within the next couple years.
The future WILL carry on WITH mirrorless cameras. The end-of-times for glass-flappers is nigh.
And I welcome the advantages it will bring.