>>4145921DSLRs are definitely cheaper right now. D750 can be had for $500-$600 and all anyone would realistically need for photo work. you pair that with the 50mm f1.8g and that's a badass starter kit. Awesome battery life, OVF is super convenient when using flash, value for stills through the roof.
But cropped systems have their own advantages even as a main / only system. My E-M1iii has the superior build, ergos, video, AF, weight, and unique lenses like the 8-25 f4 (16-50mm FF) or 20mm f1.4 (40mm FF) that make it particularly great for travel / outdoors. Olly is my only system now, I've sold all my other gear to get more MFT lenses and I'm totally content and happy. I shoot Product, Street, and Travel / Family.
Fuji has it's own unique advantages. Those tiny f2 primes are great for street. They aren't that ridiculously priced and the build quality is very good. The ergonomics / controls on my X-T2 were great at teaching me the exposure triangle, and it's very logically set up. Yes, Fuji stuff is a little pricier than 20 year old DSLR gear, but it feels premium, and looks good. You might not think that looks are important, but if I'm going out with my GF and try to bring the D5MarkII it's a bit of an eye sore. Too big to leave on a table while eating and a pain if I'm not bringing a bag. When I used to take my X100 or now my EM5iii w/ 17mm f1.8, it's a little accessory / conversation starter. I'm not the weirdo with the big camera, I'm just a dude that happens to have a camera.
TLDR: Every system on the market has it's advantages and you'll probably be more than happy with any of them as long as you understand how you will use your camera.