Is Tax Deed/Over The Counter Land investing oversaturated?

[Yannick Tremblay Martinez]

I am a Canadian Land Investor and get my acquisitions by cold calling, Tax Auctions and Pre tax. The only issue about my model is that in my province there is a 1 year redemption period making the process slow to make money, but atleast there is much less competition.
Now ive been studying Tax Deed investing in the USA because it seemed faster if you have capital, but my worry is that it may be too competitive.

My questions are:
Is the current market oversaturated for online auctions? 
Is there any deals to be made as they say 10-50 cents on the dollar or is that a long gone dream?
Is over the counter tax deed investing worth it aswell?
Is there alot of volume allowing for deals to be made or are you getting outbid by everything and everyone?

I was looking at a few states past auctions and everything was way overbid the assessed value so that discouraged me a bit but maybe im missing information?
I would love your 2 cents on this.