They need to get some football tv rights (like they have in Germany) before they can push the price up but that could be tricky for them over here. The PL tv deal has just been rolled over until 2025 and BT have the CL rights until 2024. That said, there have been some stories suggesting that BT are looking to sell off part of BT Sport and or take on a partner and in the interview I saw with Hearn he hinted at another announcement soon regarding DAZN partnering with somebody else.
Putting 2 and 2 together, we could see a scenario where BT and DAZN do a deal to share the CL coverage - instead of BT broadcasting all x number of games each game day, they might show 1 or 2 matches themselves with DAZN streaming the other x games each game day.