In my humble opinion, 10 month ROI isnt really that good if you consider that the equipments are on very fast depreciation schedule.
The ROI isnt as persistent as other types of investments, primary because mining causes standard computer parts to fail prematurely.
My X79 still runs fine after 8 years of service becase I only do web browsing with it, but...
The video cards in a mining rig may die in 1-2 years or less due to heavy cryptomining and/or faulty riser boards. tbh, I'm having some doubts about getting into mining.... jumped in when ROI was about 6 months.
If you manage to kill a GPU in less than 5 years of mining on it, you're doing it WRONG.
I have quite a few cards that have been mining (or running the DNet client, which is also crypto work and JUST as intensive to the GPU) since the LITECOIN GPU mining days in 2013/2014 that are STILL mining away today.
Do quit spreading the "mining kills cards fast" FUD lies.
I think it all depends on if you can keep them cool. How many fans need replacing/rebuilding after 12 months on GPU's. I've had a few that I had to replace fans because they just wore out. I did kill 1 7950 because the fan went out and I wasn't monitoring it and it ran for a long time at high temps in the summer. Heat and GPU's don't mix well.