I have at times, done that, but mostly try to meet the specifications called for, so I try to use the best filters I'm aware of for the application, same with the oils or lubricants, with the main goal of adhering to what the manufacturer calls for, as best I can. I don't know that by doing this and in comparison with using alternate or as equal, both filters, oils, and or lubricants, that there is a significant difference within what I have. I'm not an OEM fanatic, kind of a stickler for maintenance, again, as best I can. Its good to be "conscientious" about it as I see it.
I use oem parts on my '08 JD lawn tractor, bought a more expensive strong box battery for it in '11, 5th year now, so that's potentially 4 regular lawn and garden tractor batteries as many get one season out of them, I got three out of the one that came with it. It was kept charged off season, as I do start this tractor monthly off season, and run it a 1/2 hour or so. Filter, mower blades, are JD, oil is not, 160+ hours now, surprisingly trouble free.
I have a Stihl chainsaw, MS390, I did a refurb on it, all new plastic, OEM stihl parts, but also run all their products in it, chains, sprockets, bars, oil and oil mix for fuel. I've never had the engine apart in it so far, no scoring or much wear in the bore and or piston, starts well for the most part, runs fine and now looks brand new again. It's done 5 cord a year, for 7 years now on average, trimming and clean up for 6 before that, so its not seen daily use, but its sort of a hobby and its fun to pick one thing and do this sort of thing, as if you have the brand as a sponsor. Main thing is that its performed as needed, no matter what label is on it, but its enjoyable as I like the work.
Farmer I used to help had mostly JD equipment, though he's had other brands, it was a mainstay, and he used many of their products as I saw when working with him, so he was brand loyal in a sense. He was not keen in later years on their shop and service call rates. Years ago, before his last fire, he was well equipped to do things in house, that kind of changed after or so I thought. That and rising costs of everything. I can't say what all his reasoning was, wish I asked him about that, he was a great friend over the years, and I had a lot of admiration for what he did and how he stayed in it. He had bought new JD equipment in later years, in the past there was more variety mixed in. He started going elsewhere for major repairs, and though he may have been dyed in wool green on the surface, the other dealer was CNH and seemed to have a better reputation amongst farmers in comparison, but he never really dealt with them, even when they had a branch right in town. He used JD parts, filters, fluids and many similar things OEM, but not everything exclusively OEM and may have figured doing this and staying with that brand was the better of the 2 choices. He was careful with money and finances, very careful, as that's all part of the farming game to be successful, which he was for the most part.