35mm went out of fashion years ago for commercial use; commercial (ad studios, fashion, sports etc.) is dominated by digital. Wedding pros have commonly invested in the high-end $45,000+ Hasselblads. I watched a pro working one of these amazing beasts recently (leased equipment) capturing magnificent night sky shots flawlessly. Doing that on film is far, far more interesting, fun and educational, and of course you see reciprocity failure in all its ruddy glory. Love it. But swing to the other side where people want things now, not in four hour's time and you have to consider the edge that digital work has over analogue. And the fact that the analogue pro market is several orders of magnitude smaller than the beast in the digital spectrum.
You must have that WOW! factor in your work. Truth be told, even at quite sensible enlargements with quality optics and careful exposure, 35mm doesn't cut it that much alongside medium format, allowing or requiring, as it does, an understanding of precise judgement-based metering far removed from poking around with fancy matrix/evaluative displays.
Nobody would buy my Ilfochrome Classic prints shot on 35mm now. They turn around and see the better hybridised prints from MF, with better contrast, outstanding clarity, sharpness and tone. But 35mm is great for personal use, for fulfilling a desire to produce quality work at the relatively least expensive end of things and for travel, when one lens can cover all eventualities. Work within your capacity and understanding for shooting quality work and you never know, people may take a shine to you and actually buy it.