Can anyone tell me if Canon has given up on us Pro DSLR users? I don't want a mirrorless! Please don't start telling me about any advantages to mirrorless, I don't care.
No one on this forum can tell you that. And anyone who says they can is lying.
Neither Canon nor Nikon have made any statements about the future of DSLRs. (Although actually, Nikon Rumors reported a few months back that Nikon has new DSLRs in the works. However, a more recent report on Nikon Rumors quotes Nikon as saying they are concentrating on mirrorless for the time being. Canon has make similar statements, declaring for example, that they are currently focused on expanding the RF lens line and are not
currently developing new EF lenses.
Anything you read here is pure speculation.
Canon has a current professional model the 1Dx III, which is excellent and state of the art. They are not due for a refresh for another three years, so we won't know anything for at least three years about their plans for future 1Dx DSLRs. And, even then, they could easily stretch out the refresh cycle by a year or two, so who knows?
It would be uncharacteristic of either Canon or Nikon to definitively declare they are dropping DSLRs. Given the high demand for the R5 and R6 and the problems with the supply chain, even if Canon has future plans for new DSLRs, it is likely those plans have been put on hold until COVID-19 impacts shake out.
My personal opinion, and anything you read on this forum is just opinion, is that Canon and Nikon will wait to see how the market shakes out. I have often said that I think it is unlikely that 100% of DSLR users will convert to mirrorless. There is obviously a bottom line, return on investment number that Canon and Nikon have for future camera development. If their market research shows that there is a large enough market to justify future DSLR development, they will do so. Only Canon and Nikon know what those numbers are.
In the meantime, if you want a pro 1D x series camera, buy the 1DX III. If you want a 5D series camera, the 5D IV is excellent. Both Interestingly and unfortunately it has gone up in price in the past year. Possibly driven by the same shortages that are impacting mirrorless cameras. A year ago, new 5DIVs could be found for about $2,000 (USA Warranty, new) but the going rate now is closer to $2,250 -- which is still $1,600 less than the R5.