That's not really how politics works unfortunately and is something Labour are guilty of doing. In a 2 party system, which is effectively what we have, power will swap hands between the two. It always does. It is rarely because the opposition has become more appealing but because people eventually want a change. The 2 parties have a choice of sticking to their guns and waiting for a turn or going after voters on the opposite side and then convincing themselves it was the moving central that achieved it and not just the fact that they were the alternative that people were getting away from. If the Tories went right and stayed right then they'd get in eventually just the same as if they went left. Labour also had a perfect opportunity to go left this election but instead went right and those centrists will now use that as "proof" that you need to go right to win when the reality is they could have fielded a s***y rag on a stick as leader and beat the Tories.
The Tories going further right can only be a bad thing because anyone seeking an alternative to Labour will have a choice between Reform or Tories and if they are both trying to out-extreme each other then it will not be a pleasant place with a large part of the country having to kowtow to the crazies on the far right. That's how USA ended up with Trump. We can see from there that moving further and further right doesn't lose votes, it just legitimises the abhorrent views of the extremists.