Wow, so much is needed even at a basic set up like this, how much is your capital in all of this? The basics for this seems to me like a lot of money. Starlink got the hype last year in my country but there doesn't seem to be enough people that wants to take on it. How's your profit on this monthly though? Have you got to the ROI yet?
Erm, it's really not a lot. You seem to be focussing on the wrong thing. For the networking setup described above, cost is about $100 for a cheap PC off Ebay, around $50 for an old network switch (doesn't need to be fast or fancy). So $150 all-in on networking hardware. These are the basic things you'd need even without remote access (as you need a PC connected to the same network as miners in order to configure them, restart them, monitor log files when errors occur etc). And the switch is required in order to connect multiple network devices to your internet source. The only additional thing (for remote access) - is literally an app or software, which depending on your windows version may be included anyway.
The power, cooling and racking infrastructure is what you should be focussing on. For 50 miners I would estimate somewhere between $3,000 and $15,000 - depending on the quality of components used, building works required, whether you use external tradespeople etc. You will need some heavy duty switchgear, cabling and wiring work. Whilst I've done all mine myself, this is really something a professional should be doing.
I've been mining 4 years across several locations, obviously it is profitable otherwise I wouldn't be doing it.
You need power around $0.06 per kWh or lower realistically (to profit from mining commercially). And even then it is a very risk business. For most it makes more sense to just buy Bitcoin and hold.