No, pretty soon as in next halving. 1800 BTC per day production isn't going to keep enough miners interested, but the fees will.
Why would 1800 BTC/day at some future valuation not be interesting for miners when 3600 BTC at $15-$150 is, as was 7200 BTC at $0-$31?
No one is forcing anyone to make huge capital investments - it's healthy competition which clearly finds the current production rate attractive.