Quickly was about 4 years though wasn't it? Sure it changed to ITV News in autumn 2001.
Of course they claimed a slot on DTT
wasn't available when it closed but was only a few months later they added a 24 hour stream for ITV Play.
They didn't add a stream for ITV Play, they closed Men and Motors to make way for it, like ITV NC made way for ITV4.
And with National Grid Wireless getting £10million per annum for Freeview slots at the time, participation TV would certainly pay the bills more than any other type of channel. ITV4/ITV NC of course was on ITV's then 48.5% of D3&4, so they didn't have the burden of high fees, however ITV NC did suffer from not having widespread Freeview coverage during 2004-5, because ITV took ages to install new encoders in each region to allow four streams to fit on their side of the multiplex.