Despite Sense's initial failure, the regulator in Denmark saw the promise in the MVNO model as a cost-effective route for telecom companies to enter the market and in May 2000, legislation passed that required network operators with significant market power to open up access to their infrastructure. By August of that same year, the MNO SONOFON had solidified the first viable MVNO agreement with Tele2. This agreement provided Tele2 with access to SONOFON's network for both mobile and roaming services, the latter of which had been requested by (and denied to) Sense Communications. With the new regulations in place, MVNOs in Scandinavia eventually grew to a market share of above 10%.